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BobinNH,

Thanks. I will give 115 grain Paritions a try.

What power do you use? I have been using IMR 4350.


Thanks,

R

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Originally Posted by Mule Deer
southtexas,

Yeah, different bullets can seat considerably straighter in the same dies. I had an early lesson in this. My first .270 Winchester REALLY shot 150-grain Hornady Spire Points, as in 1" groups at 300 yards. I thought, of course, the rifle just "liked" them, but a number of years later, long after that .270 was gone and I'd gotten my first concentricity gauge, I tried a bunch of different bullets in the same seating die. The 150 Hornady Spire point seated MUCH straighter than any other bullet, probably due to the way the nose of the bullet fit the die.

In my experience, seating lighter (shorter) bullets straight is even more important. Heavier bullets with longer shanks tend to straighted out in the throat, or at least that's my guess.


that sounds logical, thanks. I will do a little experimenting myself.

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Originally Posted by roundoak
Been shooting the Bob's since the 1960s and tried many loads over the years. The 115 grain Nosler Partition stands out in a combo of accuracy and bullet performance on Mule and Whitetail deer.

Loaded with 42-43 grains H4350 in two tang safety Ruger M77s 22" barrels I get 2820 - 2830 fps.

A Ruger 77 LT (long throat) shoots best with 45 grains H4350 at 2875 fps.



Roundoak, I've only been shooting a Roberts for a few years but it is very accurate with 115-117's.

117 Sierra Gameking
H4350 43.5-44 grains(max)
CCI 200
Rem brass

2900fps give or take.

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Yeah, 115-117 grain bullets normally shoot very well with about that much H4350. They kill stuff too!


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100 TSXs are the shizzle in the Bob....


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Raisuli,the Roberts is a Junior Version of the 270 Winchester, and the same range of powders seem to work well;IMR4350 as you mentioned, H4350 as JB recommends,RL22,and back when we were running the cartridge a lot,IMR 4831 gave great velocities and accuracy with everything from 87 gr varmint bullets(app 3300 fps),up to 120 gr bullets, the 115 and 117's included.

I recall one Ruger M77 that broke 3000 fps pretty handily with the 115 Partition and IMR 4831.

I would not be shocked today to see 7828SC do a great job with the 115 and 117 gr bullets also,but have never tried it.

For me, I pretty much always used the 100 gr Nosler Partition, figuring if I wanted more than that I would just grab my 270,but if I were planning on making a 257 an all round rifle, I would likely load a 115 NPT to around 3000 fps and Talley Ho!

Last edited by BobinNH; 05/27/12.



The 280 Remington is overbore.

The 7 Rem Mag is over bore.
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Hi BobinNH,

Thanks for the info.

I have had to reevaluate hunting rifles due to shoulder injuries. I haven't fired a rifle in about 10 years, which was about the time I had my first surgery on my right rotator cuff. I have had two more on the same shoulder since. Now I'm in balance: three on the left & three on the right.

I was drawn for Utah this season. The 7MM Rem Mag is ideal for the area I hunt. But I will not risk another shoulder surgery shooting magnums.

My gun dealer has a Featherweight .257 Roberts on its way. It should be in next week. I am hoping that it will allow me to resume hunting.

With a .257 Roberts and the right load, I might not need another big game rifle. But I will keep my Sako 7MM Rem Mag anyway. It is by far the most accurate rifle I have. I hope I am able to shoot it again.

If all goes well on this year's deer hunt, I will collect on my Utah elk bonus points. I should have about 20 bonus points -after my first surgery on my right shoulder I applied for bonus points only- so I am sure getting a tag will be perfunctory. If I am drawn, it will give me over a year to get good enough with my .257 Roberts to consider it for elk, which is why I am thinking 120 grain Partitions. If my .257 Roberts doesn't work out, I'll have to see if my shoulders can withstand 7MM Rem Mag recoil, or I'll have to give up elk hunting...and a lot of bonus points.


Take care,

R

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R: The Roberts is a great cartridge,and I'm sure it will do well on your mule deer hunt.

For the elk, there are a host of other cartridges that squeeze in between the 7RM and the Roberts,toss heavier bullets of greater diameter than the Roberts,yet bounce gently enough that your shoulder will not be bothered, but that is a personal thing that you have to determine for yourself.Among them may be such good things as a 260 Rem, 6.5x55,6.5 Creedmoor,7/08,7x57,etc....maybe even a 270 or 280,though both burn a skosh more powder and recoil a bit more than the others.All are elk capable.

Sounds to me like you may be a perfect candidate for 7x57 and a top shelf 140 gr bullet for that elk hunt! smile




The 280 Remington is overbore.

The 7 Rem Mag is over bore.
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7828 is my choice, I've got a Winchester 70 & Remington 722 in the 257 Robt's. I've used imr 7828 since it's inception in '87 & have never went back. There weren't any reloading books at the time with the load data for the new powder, I wrote Leupold a letter, they sent me information on the 7828 loadings with the Nosler bullets & I've been using it since. My loads are with 120gr PBT bullets, any brand brass I happen to have at the time, any large rifle primers. The last five shot ballistics I had on the Chrony were: 3298 3259 3248 3245 3230.

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Raisuli,

The 257 Roberts with 120 gr nosler handloaded is riding on the heals of the 25-06 or the 270 with 130 gr. As Mule Deer said, The difference is not as great as people think.

If I had only my Roberts rifle to use, I would go elk hunting with it, I have before just to do it.


happiness is elbow deep in elk guts.
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I don't really hot rod but I like 42.5 of H4350 with anything 115-120. So far I've killed a hog and a corsican ram with 115 BT and a whitetail and bobcat with 120 Hornady Interlock HP. Velocity runs around 2750 fps.

Last edited by scottfromdallas; 05/27/12.

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I was VERY PISSED when they stopped selling RL12 because Id found a load of 37 grains of that allowed my 257 BLR to shoot under 1/2" groups with that powder and a speer 100 grain bullet
now the best load Ive found 39 grains of imr 4064 and its only good for about 1" groups, the heavier slugs just don,t group as well in that particular rifle for some reason

Last edited by 340mag; 05/27/12.
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"I have had to reevaluate hunting rifles due to shoulder injuries. I haven't fired a rifle in about 10 years, which was about the time I had my first surgery on my right rotator cuff. I have had two more on the same shoulder since. Now I'm in balance: three on the left & three on the right."

That has to suck big time. I have arthritis in my right shoulder so I've been playing with the 7x57 cartridge. I'm hoping I can find a load I feel confident with on elk with that rifle. I ave two rifles i .257 Robt. One, a Ruger #1B is a tackdriver with the ammo that came with it. It's the Norma 100 gr. load. I wish they still loaded that one.
The other rifle is a Winchester M70 Featherweight that matches my 7x57. I've only messed with a few bullets in it so far but about the best it will do with anything is 1.25". So far anyway. Best bullets so far have been in the 100 gr. tange, the Sierra Game King, Pro-Hunter and the 100 gr. Barnes TSX. I've only tried once with the 120 gr. Speer bullets but the rifle hasn't liked them so far.
A suggestion, if I may. If your shoulder is a problem, why not add a Pachmeyr Declerator or Limbsaver recoil pad to the gun? I have them on a couple of my now semi-retired magnum rifles and they do make one hell of a difference. So far, my 7x57 isn't giving me much trouble with the shoulder but I'm seriously considering having one of those pads installed.
I was looking in the Brnes manual and they have a 115 gr. TSX that can be pushed anywhere from 2769 FPS with H4350 to as high as 2902 with Vit. N165. My 100 gr. TSX load does 2950 FPS from Barnes' max load of 44.5 gr. of IMR4350 which is quite a bit slower than what they published. I haven't used it on game at all. Seems like I can't draw a tag for anything in my home state. Well, I'll be doing an elk hunt in December. Hopefully with the 7x57 but I will take the .35 Whelen as a back up. I do love that cartridge even if the shoulder complains.
Paul B.



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Hi PJGunner,

Thanks for the info. I have lumbar problems as well, but I have yet to experience anything as near as painful as shoulder pain. More often than not, typing aggravates my shoulders.

I hope you're able to reduce your pain with anti-inflammatory medication. Naproxen works for me when the pain is not that bad.

It's been a long time since I have fired a big game rifle. If I am able to shoot a big game rifle, I'll probably be limited to sighting it in, firing a few rounds now-and-then, and hunting.

I am going to take your advice. If my new .257 Roberts aggravates my shoulder, I will try a recoil pad.

Thanks again, PJHunter,



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Dagnabbit, BobinNH, now you went and got me to giving serious consideration to the 7MM Mauser. I sure as heck hope I don't find one 'cause I'm liable to buy it. Heck, I'm already checking loading data for it. A 150 grain .284 caliber bullet at 2800 FPS is about as good as it gets and much better than necessary. No wonder hunters of yesteryear who weren't as bright as we are used it for everything. A cartridge that costs five simoleons has got to work better than one that costs 90% less, right?

I need to stay off these boards. They're gunna cost me money.

Now where can I find me a 7MM Mauser???



Take care, BobinNH,

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I think the 7MM Mauser has been hiding in plain sight:

http://africanxmag.com/mausers_7mm.htm

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Originally Posted by Raisuli
I think the 7MM Mauser has been hiding in plain sight:

http://africanxmag.com/mausers_7mm.htm


I dunno if anyone else has had trouble but that link locks my computer up solid as a rock. mad I tried three times and eveytime a pop up slides across the screen asking you to subscribe. Click o the close button and poof, locked up tight. Wait for it to go away and that don't happen.
Paul B.


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Jack O'Connor used to use 39.5 grs. of IMR 4064 in his Roberts with a 100 gr. bullet. Said the cases would fall out of the gun and they would last "at least 40 times."
What has impressed me with the Bob is that one can get good velociites at low pressures. That and it can be loaded with alot of diffrent powders. Makes for lower muzzle blast vs. my usual loads in the .243.
There is alot to like with the Bob.
Heck, I've even tried .257 Roberts ammo in my .25-284, mostly to see if it will feed from the magazine. It wouldn't completely chamber BTW.
Why ? Because I'm toying with the idea of making it into a Roberts, maybe with a heavier, or a shorter barrel. The Disease never sleeps does it ? E

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Raisuli,

BobinNH has given great advice and suggested alternatives to the 7mm Magnum for elk. I know you hate to risk damage to the shoulder that has already been an ordeal. I've a 7x57 that I love. Never used it on elk, but it has accounted for many Scottish stags that of course are much smaller than elk. But it's cleanly killed everything I ever shot with it -- with no fuss, no muss, and without joining my shoulder blades together. The recoil is quite gentle.

Admire your spirit. Good luck!



Al

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Shot my Mark X Mauser yesterday, 75gr Hdy HP, 2.75g (42.43gr) IMR8208XBR, 2.870" OAL, CCI 200, WW Super brass, 3520fps avg., 17.0 sd. 5 shots in 1.8", 3 of them in .75", at 300 yds. I think this load is a keeper. 4-12x40 Redfield scope, no PA other than centering the image with dark edges, new eyeglasses. I may have to try one of Doug's 6.5-20x44 Vipers to see if this thing will really shoot.


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