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#3604040 - 12/24/09 12:53 AM 375 Ultra anyone?
Dufur Offline
Campfire Regular

Registered: 11/19/04
Posts: 342
Loc: Oregon
Never see much on here about the 375 Ultra. Opinions? I just got an XCR 700 a short while ago and started loading for it. Weather has kept me off the range for the most part but the one time I've had it out I was surprised at how easy it was to control the recoil considering how light the rifle is. I was shooting from the bench; I did make an effort to shoot with my head more upright rather than leaning down into the scope. Granted they were middle of the road loads with 260 and 270 gr bullets. Thought I'd work my way up to braving the top end 300 gr loads. As a sidenote; Nosler found the cartridge to be accurate as they have made it their standard test cartridge for .375 cal. as per 5th edition manual. I'm thinkin a 260 gr accubond .473 BC crowding or over 3000 fps is a pretty mean combo. Then again a 300 AB at 2850 might be more better!

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#3606574 - 12/24/09 05:59 PM Re: 375 Ultra anyone? [Re: Dufur]
Mike378 Offline
Campfire Regular

Registered: 06/08/05
Posts: 385
Loc: Sydney Australia
Yes, there certainly seems a lack of interest, at least on froums. On Australia's biggest forum all the other 375s are there, that is, H&H, 375 Wby, 375 Ruger and 378. Maybe only being in Rem 700 rifle is a reason but then there are a lot of Rem 700s in 375 H&H.

I think it would be a great 375. Using Varget it would duplicate top H&H loads with low pressure as does the 378. It kind of relates to the the 375 H&H about the same way as the 416 Rigb relates to the 416 Remington.

I really like the RUM case as it maximises out what can go in standard actions like the Rem 700 and M70. A mate of mine has done a lot with the RUMs and especially the 338 and has also taken the 338 to Africa.

But again, to get the full enjoyment the 375 RUM should give I think you will like playing with 375 H&H duplication loads. In a 378 85 grains of Varget is about 2650 with 270 grainers and extremely low pressure and the same load hits 2500 plus with 300 grainers and a bit over 2700 with the 225 grain Hornady. Loads for the RUM will obviously be a bit less powder

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#3606730 - 12/24/09 07:19 PM Re: 375 Ultra anyone? [Re: Dufur]
TJAY Offline
Campfire Regular

Registered: 03/06/07
Posts: 797
Loc: Minnesota
I shot a deer with mine year before last. Used 225 Hornady with AA5744. Its was about 2700 fps and shot 1 inch 5 shot groups. Oh the deer was a bang flop at about 200 yards. I find the recoil to be very easy to control.

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#3606771 - 12/24/09 07:53 PM Re: 375 Ultra anyone? [Re: Dufur]
Mark R Dobrenski Offline
Campfire Oracle

Registered: 04/19/01
Posts: 28277
Loc: Bozeman, Montana
IMO not many people work with the round cause it's a bit more than most wish to deal with when it comes to recoil. Personally I feel that it's a heck of a good round and the ones I've been around have been very good shooters.

I use a 375 Wby quite a bit and could easily hunt the world and several life times with a good 375 (of some sort) a 270 and a 223.

Dober
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#3606961 - 12/24/09 09:37 PM Re: 375 Ultra anyone? [Re: Dufur]
Wildcatter264 Offline
Campfire Ranger

Registered: 01/28/08
Posts: 1807
Loc: Back home in Dixie
Have a friend who had a CRF one made up by re-barreling a Win Classic SS M-70 from 300 RUM to 375 RUM. He shot a brown bear with it several years ago with 300 grain bullets - don't remember which. Said he was very satisfied with the accuracy and finality of performance on the bear.
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#3607512 - 12/25/09 08:11 AM Re: 375 Ultra anyone? [Re: Wildcatter264]
Dufur Offline
Campfire Regular

Registered: 11/19/04
Posts: 342
Loc: Oregon
While I don't see a dangerous game hunt in my very near future; its still nice to know I have something in the arsenal to kill something big with. For the time being I'm going to play with the accubonds and enjoy the 270 Win/150 gr like trajectory out of a 375. I'll just throw it into the rotation and go hunt elk with it. I've only shot two groups with it. I haven't even begun to tune a load and it shot 1.5" and 1.25" w/260 AB and IMR 4350. I now have several loads loaded to try. Can't wait to make it out to shoot!

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#3607703 - 12/25/09 09:25 AM Re: 375 Ultra anyone? [Re: Dufur]
Mark R Dobrenski Offline
Campfire Oracle

Registered: 04/19/01
Posts: 28277
Loc: Bozeman, Montana
Personally, I think you'll come to enjoy it. Keep us in the loop how its going with it.

Dober
_________________________
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#3608295 - 12/25/09 01:06 PM Re: 375 Ultra anyone? [Re: Dufur]
Wildcatter264 Offline
Campfire Ranger

Registered: 01/28/08
Posts: 1807
Loc: Back home in Dixie
That kind of accuracy - and better with fairly straightforward load development - is been my experience with both the 300RUM and 338RUM cartridges. They seem to be well designed. Good hunting!
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Make up your minds that happiness depends on being free, and that freedom depends on being courageous. Let there be no relaxation in the face of war. Pericles 495 BC

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#3608298 - 12/25/09 01:07 PM Re: 375 Ultra anyone? [Re: Wildcatter264]
Mark R Dobrenski Offline
Campfire Oracle

Registered: 04/19/01
Posts: 28277
Loc: Bozeman, Montana
Each and every one of the RUM's I've ever been around have exibited similar qualities. All have been spirited when it comes to recoil and they've all been incredibly good shooters!

Dober
_________________________
"True respect starts with the way you treat others, and it is earned over a lifetime of demonstrating kindness, honor and dignity"....Tony Dungy

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#3608323 - 12/25/09 01:27 PM Re: 375 Ultra anyone? [Re: Mark R Dobrenski]
Chandalar Jack Offline
Campfire Regular

Registered: 05/23/06
Posts: 645
Loc: foothills of the Brooks Range
The Remmy 700 I had once was an excellent shooter...recoil was easy if you will. I reload so getting what I want to shoot and where was easy with this rifle.....of course all I could do to the rifle was done...bedding, trigger, changed out the Jlok on it to a Hollands...may just reconsider and do a .375 RUM instead of a .404 Jeffe

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#3608584 - 12/25/09 03:43 PM Re: 375 Ultra anyone? [Re: Chandalar Jack]
Wildcatter264 Offline
Campfire Ranger

Registered: 01/28/08
Posts: 1807
Loc: Back home in Dixie
A no-lose but tough choice, as the 404 Jeff is not only effective but a tradionalist's sentimental favorite!
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Make up your minds that happiness depends on being free, and that freedom depends on being courageous. Let there be no relaxation in the face of war. Pericles 495 BC

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#3612093 - 12/27/09 06:37 AM Re: 375 Ultra anyone? [Re: Wildcatter264]
Jesse Jaymes Offline
Campfire Ranger

Registered: 04/22/01
Posts: 1880
Loc: NE Washington
I have one and have tinkered with it some. I think you will find quite a bit of variance on the published FPS, and load data.

I had mine over a Chrono in NM at about 4000 ft and 90 degrees. I was probably shooting 260ABs or the 270 Horn. I think I was topping out at 2950ish. I think factory specs may list a god deal more than that.

2850 is a good bit more comfortable.

And like you, I have often wondered why there is little to no interest in the round, but as stated, I think once people open a box of ammo, the round seems Too Much of a Good Thing.

I may look into breaking mine in the future, as I would like to keep my retinas attached to my eyeballs.

That specs on the 260 Accubond and a decent FPS sure look appealing though.
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#3612609 - 12/27/09 09:39 AM Re: 375 Ultra anyone? [Re: Mike378]
mtnfisher Offline
Campfire Regular

Registered: 12/17/08
Posts: 762
Loc: Montana
Originally Posted By: Mike378
But again, to get the full enjoyment the 375 RUM should give I think you will like playing with 375 H&H duplication loads. In a 378 85 grains of Varget is about 2650 with 270 grainers and extremely low pressure and the same load hits 2500 plus with 300 grainers and a bit over 2700 with the 225 grain Hornady. Loads for the RUM will obviously be a bit less powder


Where did you find these Varget loads for the 378?

Thanks
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#3612662 - 12/27/09 10:01 AM Re: 375 Ultra anyone? [Re: mtnfisher]
AussieGunWriter Offline
Campfire Guide

Registered: 05/31/05
Posts: 4677
Originally Posted By: mtnfisher
Originally Posted By: Mike378
But again, to get the full enjoyment the 375 RUM should give I think you will like playing with 375 H&H duplication loads. In a 378 85 grains of Varget is about 2650 with 270 grainers and extremely low pressure and the same load hits 2500 plus with 300 grainers and a bit over 2700 with the 225 grain Hornady. Loads for the RUM will obviously be a bit less powder


Where did you find these Varget loads for the 378?

Thanks


I Know Mike personally. He does not "find" loads, he "develops" them. Mike is the most knowledgeable handloader I ever met in my 48 years of shooting. If he says it is so, you just got the shortcut of your life.

His knowledge about handoading, bedding or most things rifle, far exceed anything ever published.

JW
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The only way to improve a .30/06, is to clean it once in a while.


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#3612713 - 12/27/09 10:21 AM Re: 375 Ultra anyone? [Re: AussieGunWriter]
mtnfisher Offline
Campfire Regular

Registered: 12/17/08
Posts: 762
Loc: Montana
Originally Posted By: AussieGunWriter
Originally Posted By: mtnfisher
Originally Posted By: Mike378
But again, to get the full enjoyment the 375 RUM should give I think you will like playing with 375 H&H duplication loads. In a 378 85 grains of Varget is about 2650 with 270 grainers and extremely low pressure and the same load hits 2500 plus with 300 grainers and a bit over 2700 with the 225 grain Hornady. Loads for the RUM will obviously be a bit less powder


Where did you find these Varget loads for the 378?

Thanks


I Know Mike personally. He does not "find" loads, he "develops" them. Mike is the most knowledgeable handloader I ever met in my 48 years of shooting. If he says it is so, you just got the shortcut of your life.

His knowledge about handoading, bedding or most things rifle, far exceed anything ever published.

JW


Thanks JW. I'm always looking for "new" loading data on the 378.

I did send him some pictures of the 378 magazine box a few weeks ago. smile
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It's not that Liberals are unwilling to listen to another point of view, they are just simply amazed that another one exists.

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#3612913 - 12/27/09 11:42 AM Re: 375 Ultra anyone? [Re: mtnfisher]
RinB Offline
Campfire Regular

Registered: 03/05/08
Posts: 1399
I have wanted a 375 RUM set up like a baby big 50. Use a bull barrel about 28-30 inches long. Single shot. Long range turret style scope. Shoot 300 Sierra BT's. When that bullet arrives you have something!


Edited by RinB (12/27/09 11:42 AM)

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#3619839 - 12/29/09 12:45 PM Re: 375 Ultra anyone? [Re: RinB]
JohnT Offline
Campfire Regular

Registered: 01/16/03
Posts: 727
Loc: Sydney, Australia
Yes I'll Have one!

I think its a great calibre. Nosler in their manual claim its the most accurate 375.

I'd have to agree on the accuracy claims as you can see below:


Mine is a std M70 stainless 375H&H reamed to RUM and dropped into a wood stock from a M70 Safari. (Heck you can't have a DGR without CRF right??? eek)

Really comes into its own with the long monolithic bullets where the H&H gets a bit challenged for powder space.

regards
JohnT

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#3620671 - 12/29/09 05:11 PM Re: 375 Ultra anyone? [Re: JohnT]
DesertMuleDeer Offline
Campfire Ranger

Registered: 02/22/09
Posts: 1840
I really need to try one of these. Seems like a neat cartridge.

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#3624369 - 12/30/09 05:01 PM Re: 375 Ultra anyone? [Re: DesertMuleDeer]
3sixbits Offline
Campfire Ranger

Registered: 01/22/05
Posts: 2488
Loc: Just a quarter a mile from the...
After shooting several hundred round of .300 RUM, I know that I am not up to the .375 RUM. I just lack the intestinal fortitude to shoot one off a bench.
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Thus saith thr lord; Cursed be the man that trusteth in man, and maketh flesh his arm, and whose heart departeh from the lord. Jeremiah 17:5 KJV

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#3624508 - 12/30/09 05:38 PM Re: 375 Ultra anyone? [Re: 3sixbits]
oldman1942 Offline
Campfire Ranger

Registered: 09/15/09
Posts: 4310
Loc: WY & FL
400 gr, .411 at 2400 will do the job and hurts nowhere near like the RUMS. (I owned a 700 BDL 300 RUM for 8 rounds, still painful to recall that snapping SOB)


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#3625395 - 12/31/09 01:36 AM Re: 375 Ultra anyone? [Re: oldman1942]
JohnT Offline
Campfire Regular

Registered: 01/16/03
Posts: 727
Loc: Sydney, Australia
Oldman the problem is not the RUM it is the fact that the rifle only weighs 8lbs. There is not much difference between a 9 1/2lb 375 RUM shooting 300gr @2650fps and my 404 Jeffrey at 10.5lbs shooting 400grainers at 2250fps. The Jeffery recoils just a bit more to me anyway.

If you can shoot the 375H&H or the 375 Ruger then you can shoot the 375 RUM in rifles of appropriate weights.

regards
JohnT

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#3625615 - 12/31/09 06:01 AM Re: 375 Ultra anyone? [Re: JohnT]
oldman1942 Offline
Campfire Ranger

Registered: 09/15/09
Posts: 4310
Loc: WY & FL
Well yes BUT. I found the 300 RUM to come back with a real fast snappy recoil. I shoot the 375 H&H and can see no reason for more as it has a nearly 100 year record of getting it done.

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#3626949 - 12/31/09 12:03 PM Re: 375 Ultra anyone? [Re: oldman1942]
JohnT Offline
Campfire Regular

Registered: 01/16/03
Posts: 727
Loc: Sydney, Australia
When I am the nut behind the trigger they all seem to come back snappy & fast. Have looked for but not found that slooow push they told me about before I bought my first 375 H&H. cry.

regards
JohnT

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#3627581 - 12/31/09 03:08 PM Re: 375 Ultra anyone? [Re: JohnT]
3sixbits Offline
Campfire Ranger

Registered: 01/22/05
Posts: 2488
Loc: Just a quarter a mile from the...
I own and shoot a few .375H&H's (six to be exact) not one of them kicks like the RUM, that SOB is just flat wicked. A 180 grain .30 cal form the RUM out recoils any of my .375's with a 300 grainier. That has to be the most brutal thing I have ever fired and loaded for with such a light weight bullet. When I'm asked to load for a RUM now I always tell the customer to sight it in himself, I won't do it and you just don't have that kind of money to pay me to do it for you.
_________________________
Thus saith thr lord; Cursed be the man that trusteth in man, and maketh flesh his arm, and whose heart departeh from the lord. Jeremiah 17:5 KJV

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#3679143 - 01/14/10 08:22 PM Re: 375 Ultra anyone? [Re: JohnT]
Dufur Offline
Campfire Regular

Registered: 11/19/04
Posts: 342
Loc: Oregon
Wow! What a group! Great shooting. I'd say you've found your load and then some smile

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#3679289 - 01/14/10 09:19 PM Re: 375 Ultra anyone? [Re: Dufur]
Fotis Offline
Campfire Outfitter

Registered: 05/22/09
Posts: 7676
Loc: Cheyenne, Wy
Fine rifle. My buddy got one in the Model 700 BDL blued wood with the embellished receiver. I found it for him on gunbroker for $450 shipped!
Anyway worked up a load for him with the 270 TSX and IMR 7828. 2930 fps and 1/2" at 100 yards. So far antelope and elk hate that rifle!
_________________________


"Weatherby was too long so I nicknamed it "Bee""

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#3679706 - 01/15/10 05:55 AM Re: 375 Ultra anyone? [Re: oldman1942]
colorado Offline
Campfire Ranger

Registered: 10/27/07
Posts: 1817
Loc: Colorado Springs, Colorado
TJ a 375 RUM shooting a 225g bullet at 2700 fps is well below 375 H&H performance. Recoil should be neglible. My deer and elk load in my 375 H&H was a 250g Swift A-Frame at 2800 fps (load came right out of the Swift Reloading Manual) and recoil was still extremely mild. I think when you start shooting 300g bullets well in excess of 2700 fps recoil will pick up a bit. Even then performance is not much better than the 375 Weatherby but uses more powder which translates into more recoil. By the way I like Rem 700s. The three which I have owned were and still are extremely accurate. I've never had a failure to feed or extract even with hot loads and only neck sizing my cases. I think they get a bum rap because they're not mauser variants.


Regards,

Chuck
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Regards,

Chuck

"There's a saying in prize fighting, everyone's got a plan until they get hit"

Ghost And The Darkness


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#3682188 - 01/15/10 05:48 PM Re: 375 Ultra anyone? [Re: colorado]
TJAY Offline
Campfire Regular

Registered: 03/06/07
Posts: 797
Loc: Minnesota
Colorado.

Yes it is well below 375 H&H power, but whitetail from a tree stand at no more than 150 yards doesnt require H&H power. I also run 300 gr Sierra's full power. I find it doesn't recoil as much as a 338 winchester in a 7.3 lb. Tikka T-3 lite SS. It just a fun gun to work with...

PS I also have some 225 loads in the 338 in the low 2Ks.

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#3683176 - 01/16/10 12:18 AM Re: 375 Ultra anyone? [Re: TJAY]
colorado Offline
Campfire Ranger

Registered: 10/27/07
Posts: 1817
Loc: Colorado Springs, Colorado
Agree TJAY, I hear the RUM series of cartridges are all very accurate. I attribute that at least as much to the rifle (M700) as to the cartridge design though ... I'm a Rem 700 fan. I'm a recoil wuss though, my 500 Jeffery weighs 12 lbs with scope ...

smile

Chuck
_________________________
Regards,

Chuck

"There's a saying in prize fighting, everyone's got a plan until they get hit"

Ghost And The Darkness


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#3684370 - 01/16/10 11:45 AM Re: 375 Ultra anyone? [Re: colorado]
atkinsonhunting Offline
Campfire Tracker

Registered: 03/04/01
Posts: 6954
Loc: Filer, Idaho, USA
I have seen maybe 50 or more buffalo shot and killed by Saeed Al Mactourn, the boss hoss at AR, with his 375/404 loaded to the same velocity as the 375 Wby and with 180 gr. Barnes and his only monoliths..It killed the buffalo as well as any caliber I have seen or used, and thats a bunch of calibers...so yes its a great option with proper bullets.
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www.atkinsonhunting.com
ray@atkinsonhunting.com
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#3685033 - 01/16/10 03:22 PM Re: 375 Ultra anyone? [Re: atkinsonhunting]
Fotis Offline
Campfire Outfitter

Registered: 05/22/09
Posts: 7676
Loc: Cheyenne, Wy
Originally Posted By: atkinson
I have seen maybe 50 or more buffalo shot and killed by Saeed Al Mactourn, the boss hoss at AR, with his 375/404 loaded to the same velocity as the 375 Wby and with 180 gr. Barnes and his only monoliths..It killed the buffalo as well as any caliber I have seen or used, and thats a bunch of calibers...so yes its a great option with proper bullets.


Ray :

you mean 270 grain right?
_________________________


"Weatherby was too long so I nicknamed it "Bee""

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#3692472 - 01/18/10 12:50 PM Re: 375 Ultra anyone? [Re: Fotis]
Mike378 Offline
Campfire Regular

Registered: 06/08/05
Posts: 385
Loc: Sydney Australia
Originally Posted By: Fotis
Originally Posted By: atkinson
I have seen maybe 50 or more buffalo shot and killed by Saeed Al Mactourn, the boss hoss at AR, with his 375/404 loaded to the same velocity as the 375 Wby and with 180 gr. Barnes and his only monoliths..It killed the buffalo as well as any caliber I have seen or used, and thats a bunch of calibers...so yes its a great option with proper bullets.


Ray :

you mean 270 grain right?


He uses 300 grainers of his own make, which are Barnes TSX style.

Over recent years he has tried a few velocity levels and all with either 300 grain Barnes X or his own bullet. He used over 3100 in the 375 Lazzeroni (like 378 Wby or 416 Rigby Improved necked to 375) and 2850-2900 which was more or less top loads for his 375/404 Improved, 2600 plus which would be real top end H&H velocities with that long bullet. However, for his last few trips he has settle on 2750 which as Ray says is like top loads in the 375 Wby.

And he shoots every type of animal with that pair of rifles. It must be about the world's best endorsement for using a 375 Ultra with backed off loads (or a 378 with even more backed off loads) or a 375 Wby with top loads


Edited by Mike378 (01/18/10 12:52 PM)

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#3743093 - 01/31/10 01:18 PM Re: 375 Ultra anyone? [Re: Mike378]
kevinh1157 Offline
Campfire Ranger

Registered: 10/21/03
Posts: 1617
Loc: Occupied California
I love my Sako 75 in 375 H&H. I had a Remington 700 LSS in 338 RUM and it was the most vicious recoiling rifle I have ever shot. I couldn't handle it. I had a Sako 75 300 RUM that I had MagNaPorted which took a lot of the muzzle flip out of it. I would not call it enjoyable to shoot, but was very doable. I think a 375 RUM in a rifle weighing 9.5-10 pounds with a good stock, recoil pad and MagNaPorted would be a good choice.
_________________________
Kevin Haile

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#3802161 - 02/15/10 08:12 PM Re: 375 Ultra anyone? [Re: kevinh1157]
Dufur Offline
Campfire Regular

Registered: 11/19/04
Posts: 342
Loc: Oregon
Well, I got out and put some loads thru the 24" 700 XCR 375 Ultra today. 260 AB bullet, rem 9.5M primer throughout.
IMR 4350--
94 gr-2881 FPS 3 shot group 1.730
96 gr-2950 fps 1.840
Both loads put the first two right together and the 3rd shot way out. I'm gonna seat the bullet deeper and try again.

H4831 SC
97 gr-- 2750 1.30
99 gr-- 2815 3.00+ probably me! smile
101 gr- 2860 1.530
The 101 gr load also put two right on top of each other and threw the third way out.

15 rds seemed to be my limit today from the bench with such a light rifle. (I seriously doubt it goes 9 lbs all up--more like 8.5 lbs) It was a handful. Its showing good promise of being a real accurate 375 though.

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#3802350 - 02/15/10 09:29 PM Re: 375 Ultra anyone? [Re: Dufur]
buffybr Offline
Campfire Regular

Registered: 02/01/09
Posts: 740
Loc: SW Montana
My .375 Ultra Mag is one of my favorite rifles, but it didn't start out that way. The first 8 shells through my "out of the box" .375 RUM was more recoil than I've ever experienced, and I've averaged 100 12 ga shells per week for the last 30 years.

Long story short, I re-stocked it with a laminated stock that fits me and is pillar and glass bedded, two cross bolts, a mechanical recoil reducer in the stock, and a Limbsaver pad. I also had a KDF brake installed on the muzzle. I topped it with a 2-7x Leupold, and with sling, the total package weighs right at 10 lbs, which is the same as several of my other hunting rifles.

I built this rifle for a Cape Buffalo hunt in Zimbabwe in 2005. My load for that hunt was 300 gr Barnes TSX bullets at 2830 muzzle velocity, and slightly less than 3 shot MOA at 200 yds. I shot a buffalo and 4 Plains Game animals including a beautiful Nyala bull at 210 yds across a canyon.

I took my .375 RUM back to the Eastern Cape region of South Africa in 2007 for another Plains Game hunt. On that hunt I loaded 270 gr TSX bullets at 3043 fps. I shot 13 animals on that hunt at ranges between 30 to 348 yds. Two of the animals were shot from prone positions, and recoil was not an issue.

Unfortunately, unless I ever go Brown Bear hunting, I don't think my .375 RUM will see any other North American use. There just isn't anything else here that requires that much power.
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#3802394 - 02/15/10 10:11 PM Re: 375 Ultra anyone? [Re: buffybr]
Dufur Offline
Campfire Regular

Registered: 11/19/04
Posts: 342
Loc: Oregon
buffybr,
IYDM-What powder are you using with the 270 TSX? Also not including the muzzle break How long is the barrel? Factory tube or custom? Thanks! On my gun the previous owner had good luck with H4350 but I haven't been able to get my hands on any lately thus I'm using the IMR flavor.


Edited by Dufur (02/15/10 10:14 PM)

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#3803333 - 02/16/10 08:57 AM Re: 375 Ultra anyone? [Re: Dufur]
buffybr Offline
Campfire Regular

Registered: 02/01/09
Posts: 740
Loc: SW Montana
Dufur, My .375 RUM has a factory 26" SS tube. My 270 gr TSX load is in R-P cases, CCI 250 primers, just under Barnes #4 book max load of IMR 4350 powder, chronographed at 10' with a Chrony F-1.
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#3805398 - 02/16/10 07:14 PM Re: 375 Ultra anyone? [Re: buffybr]
Dufur Offline
Campfire Regular

Registered: 11/19/04
Posts: 342
Loc: Oregon
Ok, thanks, good to know. My tube is factory 24" so if I'm at 2950 with the 260 AB and IMR 4350; I gotta be close to top. Kinda feels like it..LOL

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#3806610 - 02/17/10 06:56 AM Re: 375 Ultra anyone? [Re: Dufur]
sdgunslinger Offline
Campfire Ranger

Registered: 02/27/01
Posts: 1734
Loc: Gary , SD USA
you'd think a 375 RUM could do a little more in the speed department with the right powder .

My 375 weatherby will do 2950 easy with several powders and an honest 3000 with one powder.....

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#3806865 - 02/17/10 08:14 AM Re: 375 Ultra anyone? [Re: sdgunslinger]
Docbill Offline
Campfire Regular

Registered: 01/13/08
Posts: 945
If anyone cares, Warren Page used a .375 Weatherby in a Remington push feed almost exclusively on 13 safaries. He liked it better than any of the larger bores with about the same energy production. His 300 grn. load generated about 2775 fps and he shot it enough to require rebarreling maybe 3 times. There is an article from 1969 outlining his love affair with the gun.

Me thinks he knew what he was about.

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#3808616 - 02/17/10 05:40 PM Re: 375 Ultra anyone? [Re: sdgunslinger]
Dufur Offline
Campfire Regular

Registered: 11/19/04
Posts: 342
Loc: Oregon
Yeah, it might be capable of more FPS's. I've not pushed it to see where the top is. it does 2950 with the 260 AB and that will probably suffice my needs. I'm gonna play with seating depth to see if I can pull the 3rd shot flyer on each group back in with the other two. The first two shots are cutting each other's holes. Third shot is stepping out an inch and more. It is a 24" bbl rum whereas most of the earlier ones were 26". I just have gotten started on loading for this 375 so as time goes on; I'll probably find the magic pixie dust it dotes on. For now I'm concentrating on IMR 4350. Going by the Nosler book in a 26" bbl, IMR 4350 was fastest at 96gr-3026fps w/260 gr bullet. If I'm at 2950 in a 24" at the same charge weight, I'd say I'm close enough. No animal on earth will notice I left 50 or 100 fps on the table. Firing the max charge of 4350-- 96gr, When I reloaded the cases today the brass was in good shape with nice tight primer pockets still. With my other Rums that is usually the most common/consistent indicator of running too hot--expanded primer pockets, which render your brass to the junk heap. I'm not talking about the primer falling out but still when repriming with a hand primer, the primer seats with WAY less resistance than the last time the case was primed (after the 1st firing on the case. I want to get several firings out of a case since they aren't exactly super cheap.

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#3809735 - 02/18/10 05:37 AM Re: 375 Ultra anyone? [Re: Dufur]
sdgunslinger Offline
Campfire Ranger

Registered: 02/27/01
Posts: 1734
Loc: Gary , SD USA
hey , I'm all for ya if the 2950 is where you want to be .

thats the nice thing about the big case ......you can load it up or down as the situation calls for .

the accubond is a dandy bullet and I can tell you it is quite flat at those speeds .

you might consider a somewhat slower powder though.....4350 is about ideal for the smaller Weatherby case

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#3810233 - 02/18/10 08:26 AM Re: 375 Ultra anyone? [Re: sdgunslinger]
Tonk Offline
Campfire Guide

Registered: 03/28/09
Posts: 3090
Loc: Chicago, Ill.
I have a .375H&H along with a .375-Wby, no need to stock pile .375 calibers other than those at our place. If it comes to cape buffalo, I personally like the idea of the .416 Remgington a whole lot better, it shoots plenty flat with 300 grain bullets too. Just my 2cents!
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#3810567 - 02/18/10 10:20 AM Re: 375 Ultra anyone? [Re: Tonk]
atkinsonhunting Offline
Campfire Tracker

Registered: 03/04/01
Posts: 6954
Loc: Filer, Idaho, USA
Fotis,
Sorry for the speedy mistake, I have no idea where that 180 gr. came from, a senior moment I suppose...

Yes I have seen Saeed and his coharts use both the 270 and 300 gr. monlithics, both Barnes and those of his own make, the famous Walter Hogg bullet! smile smile

No doubt the fast .375s work on buffalo very well indeed, but then so does the old standard .375 H&H with the right bullets..As a matter of fact the 30-06 with 220 gr. Noslers and 220 gr. Woodleigh solids works pretty darn well on the black bulls, but the .375 would be a better bet for sure, and the 40 calibers are even better.


Edited by atkinson (02/18/10 10:22 AM)
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#3812843 - 02/18/10 09:21 PM Re: 375 Ultra anyone? [Re: sdgunslinger]
Dufur Offline
Campfire Regular

Registered: 11/19/04
Posts: 342
Loc: Oregon
Thats what I thought but H4831 SC was a slow dog! Wayyy shy of predicted velocity at max charge of 101 gr. 4350 kicked its ARSE.. Thats why I kinda think that with the 260 gr bullet that 4350 prob is ok. fills the case but don't have to tamp the bullet down!! lol!


Edited by Dufur (02/18/10 09:22 PM)

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#3828413 - 02/23/10 12:42 PM Re: 375 Ultra anyone? [Re: Dufur]
Dufur Offline
Campfire Regular

Registered: 11/19/04
Posts: 342
Loc: Oregon
I made it out to shoot this weekend. Played with seating depth and stayed with the 96 gr imr4350 charge, rem 9.5m primer, rem case, 260 ab. I thought that seating deeper would pull that flyer back in but it really didn't do much. went from 3.610 all the way down to 3.570. I did find sub inch group out of 3.630 oal. I'll try it again. It was about .9 Ctr to ctr @ 2950 fps. I might switch primers and see what that does. I actually had a complete misfire with the 9.5M; hit it twice with the firing pin but to no avail. so will try fed 15 and cci250's.

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#3852771 - 03/02/10 12:02 PM Re: 375 Ultra anyone? [Re: Dufur]
pillshooter Offline
Member

Registered: 03/16/09
Posts: 35
Loc: Sherwood, OR USA
I shoot a custom 9.3mm RUM (9.3 Ashley). I built the rifle on an SPS 300 RUM doner action and was talked into a standard weight 26" tube by PACNOR (Big MISTAKE!)I had wanted to go with a 25" safari profile heavier barrel. For reference I enjoy recoil to include my RSM 500 Jeffery, RSM 458 Lotts.... However, that 9.3mm in my 8lb rifle is a whole different ball game. I haven't done much with it lately because of this. I find it to be less than fun to shoot. I was able to push 250grn Nolsers over 3100 fps and 286grn NP at 2850fps (until I finally got Quick Loads and realized my calc. pressures were about 75k PSI)YOU MAY WANT TO CHECK YOUR LOADS since my 700 didn't show a lot of pressure signs. At this point I think that one needs to really set a rifle up for this kinda recoil much more so than for your standard big bore rounds. Since I got a 325 WSM and a 416 Rigby (and 2 375 H&H's) the 9.3mm is kinda of an odd duck right now. I'll mostly buy a HS stock with TWO recoil reducers and try some more with it once I draw an Elk tag. However, I may rechamber my Win 70 Safari in 375 H&H to 375 RUM? confused Since I picked up my Kimber 89BGR my winchester has gotten a little too dusty. I was thinking about convertinga RSM in 375 H&H to 378 Weatherby but opening the Win 70 up to 375 RUM might be the best way to go?


Brad smile


Edited by pillshooter (03/02/10 03:00 PM)
Edit Reason: Added Info

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#3866040 - 03/05/10 11:48 PM Re: 375 Ultra anyone? [Re: pillshooter]
Dufur Offline
Campfire Regular

Registered: 11/19/04
Posts: 342
Loc: Oregon
well, I am at book max.. ur right.. it doesn't show any obvious over pressure signs. bolt lift, ejection, are good. no head stamps on the case head. Primer pockets are still tight. I'm at book max per nosler. 260 gr ab at 2950 w/24" bbl. Imr 4350 96 gr. You are right however...the more I shoot this 8 lb gun, the more I have decided that yes it does kick the [bleep] outta me. At first I thought it was a walk in the prk but after 20 rds in a session I have a headache. it comes back hard and fasssst. moreso than my other rums. The gun is just so light and that's the reason. I am determined to learn to shoot it well however. I figure if I can shoot the hard kickin sob well then all the rest will seem really like a walk in the park.. mind over matter! I do usually run my rums right at book max or so.. I figure I have them for the performance so wring it out. To a point...that is. Still like my face and enjoy getting 5 or more reloads per case. I haven't owned a 375 H&H or others so I cant know how much they kick or if the extra one gets with the rum is worth it. The rum is what I have and that's what I'll shoot. It can't be much worse if at all over the 378 wby even though the mark V is heavier. That has to push back at book loads. no question. The bench is the hardest part of shooting these I think... just have to fool the brain and relax and take the hit with it to get good groups... turn it off if you will smile.. I usually bring several rifles to the range and start with the lightest caliber and end with the 375 rum. That way shooting the 375 doesn't make me jumpy when testing loads on the others. It do make you feel like it has enough power to kill all creatures that walk/crawl however. Not a bad thing smile

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#3866380 - 03/06/10 06:42 AM Re: 375 Ultra anyone? [Re: Dufur]
MarineHawk Online   content
Campfire Regular

Registered: 02/28/10
Posts: 400
Originally Posted By: Dufur
well, I am at book max.. ur right.. it doesn't show any obvious over pressure signs. bolt lift, ejection, are good. no head stamps on the case head. Primer pockets are still tight. I'm at book max per nosler. 260 gr ab at 2950 w/24" bbl. Imr 4350 96 gr. You are right however...the more I shoot this 8 lb gun, the more I have decided that yes it does kick the [bleep] outta me. At first I thought it was a walk in the prk but after 20 rds in a session I have a headache. it comes back hard and fasssst. moreso than my other rums. The gun is just so light and that's the reason. I am determined to learn to shoot it well however. I figure if I can shoot the hard kickin sob well then all the rest will seem really like a walk in the park.. mind over matter! I do usually run my rums right at book max or so.. I figure I have them for the performance so wring it out. To a point...that is. Still like my face and enjoy getting 5 or more reloads per case. I haven't owned a 375 H&H or others so I cant know how much they kick or if the extra one gets with the rum is worth it. The rum is what I have and that's what I'll shoot. It can't be much worse if at all over the 378 wby even though the mark V is heavier. That has to push back at book loads. no question. The bench is the hardest part of shooting these I think... just have to fool the brain and relax and take the hit with it to get good groups... turn it off if you will smile.. I usually bring several rifles to the range and start with the lightest caliber and end with the 375 rum. That way shooting the 375 doesn't make me jumpy when testing loads on the others. It do make you feel like it has enough power to kill all creatures that walk/crawl however. Not a bad thing smile


I'm picking up my 375 Wby today. I'm kind of at the opposite end of the spectrum. It's aleady a 9-lb rifle, and I'm installing on it an-11-oz mercury tube, a Harris bipod (on a yet to be installed swivel stud at the end of the forend), and a one-metric-ton Bushnell Elite 6500 scope. I think I will be looking at about 12 lbs when it's done. My 340 Wby Accumark is about 11 lbs, and its recoil feel milder than my Rem 700 BDL in 300 Win Mag. This kind of thing gives me motivation to keep my own weight down (to offset my fattened rifles) and to work out hard so I can carry them around. At age 42, I still prefer carrying around a heavy rifle to having it kick my brains out.

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#3869181 - 03/06/10 11:08 PM Re: 375 Ultra anyone? [Re: MarineHawk]
Dufur Offline
Campfire Regular

Registered: 11/19/04
Posts: 342
Loc: Oregon
Cool, I don't have any big game rifles that weigh in that much. I can't help but think the weight would help with staying steady when shooting from field positions as well as help the recoil factor. Like you, I'm in my mid 40's and work out alot. I find that the lightest rifle I own-WBY lgtwt- is the toughest to shoot well from field positions (and the bench for that matter). The light whippy barrel makes it pretty muzzle light. I prefer a little bit of muzzle heaviness to help steady myself. just seems to "hang" better for me. If I get another "big bore" I am going to probably go for a rifle that has some weight to it. I actually think that this 375 rum xcr is the 2nd lightest big game rifle I own. I'd have to weigh them all to be sure but it sure feels light.

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#3977396 - 04/08/10 01:10 PM Re: 375 Ultra anyone? [Re: Chandalar Jack]
AJcaturano Offline
Member

Registered: 04/01/10
Posts: 47
Loc: Saugus, Ma.
I have three Ultras, 300, 338 and 375. Love them all. I load my .375 with the Barnes 300grain, and have found it extremely accurate and deadly. I shot Cape Buffalo, Giraffe, Elk and a water buck with it. Each one took 0 to only a few steps. Seems to shut em right down. I load it with 93gr. of imr 4350 and it goes about 2780 fps.
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