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I use 68gr of I 7828 150gr ballistic tip fed215 match primer w-w brass 3000 fps out of my 26in rem 700

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67.1gr H4831
W-W case
Rem 9 1/2M primer
150gr Swift Scirocco II


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67.0 H1000 with 168 VLD. W-W case, Fed.215M primers.

I've tried it in two 7RM's and it was the most accurate load for both. H1000 is consistent and clean too. Love it in the 7RM with 160's and heavier.

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Originally Posted by TakeEm
I have also used H414 (30 06) R19 (.243 and 300 Win) BLC2 (222 Rem) and haven't had the same issues I had in my 7mm with R22. Admittedly I have spent the most time at the bench lately with the 7 and I have gotten pretty picky. Maybe the sometimes severe summer humidity is another factor in my experience as well more likely is that the others haven't seen as much variety in conditions so I haven't been as sensitive to the sensitivity. I'm not saying R 22 is bad I'm just saying that for me Retumbo seems to work better.


Mmmm.....I have never seen this....even shooting summer to winter back here.




The 280 Remington is overbore.

The 7 Rem Mag is over bore.
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All of my loads use either WW or Fed brass and Rem 9 1/2 Large Mag primers. Savage 110E in 24" barrel.

64.5gr RL22 in 160gr Sierra GameKings BT. 3020fps
64gr RL22 160gr NPT ~3020fps
63gr 160gr NPT 2880-2920fps
All of these shoot an inch or less and POI is practically the same at 100yds and 1 inch off at 200yd.

65-66-67gr RL 22 150gr Nosler BTs about 0.8MOA groups, but 66gr was starting gave a harder bolt lift so backed to 65.
61gr IMR 4831 in 150gr Nosler BTs 3000fps
61gr IMR 4831 150gr Corelokts also solid MOA.

None of this are max per book (except 67gr in RL22 and 150gr pills), but they offered best combo of accuracy/speed in my gun.
Work up.


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Originally Posted by BobinNH
Originally Posted by TakeEm
I have also used H414 (30 06) R19 (.243 and 300 Win) BLC2 (222 Rem) and haven't had the same issues I had in my 7mm with R22. Admittedly I have spent the most time at the bench lately with the 7 and I have gotten pretty picky. Maybe the sometimes severe summer humidity is another factor in my experience as well more likely is that the others haven't seen as much variety in conditions so I haven't been as sensitive to the sensitivity. I'm not saying R 22 is bad I'm just saying that for me Retumbo seems to work better.


Mmmm.....I have never seen this....even shooting summer to winter back here.


Perhaps me calling it temp sensitivity is incorrect or premature. Maybe blaming it on the powder at all is wrong it is after all a sample of one rifle, shooter and load combination. The rifle shot well with the R22 140 TTSX combo, it accounted for my best buck ever, longest shot ever, best 200 yard group ever and my FIL's best also when I had him shoot my rifle at a distant buck. It worked pretty darn well overall, it still shot good, I just had to tweak it a couple clicks here or there as time went on. It got frustrating.

RL 22 is a fine powder it has worked really well for a lot of years for many people (including me) in the 7 RM and others, or they wouldn't sell so much of it. I wasn't trying to bag on anyones favorite powder, just sharing my experience that my rifle does shoot better more consistently with Retumbo and the 150's.
I guess the bottom line is I don't know for certain if it was "temp sensitivity" that was the issue all I know is that it was sure frustrating for me adjusting POI all the time whatever the cause.
Sorry if I offended anyone.


Last edited by TakeEm; 08/22/13. Reason: clarifications

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TakeEm I was not offended. smile ...just commenting that I have not had it happen. You know what you saw and maybe it was the RL22,or maybe it was something else. Dunno.

Temp variation with powders is such an old issue to me because I have been watching it for many years with offenders like IMR4350 and IMR4831;I don't doubt it goes on with RL22,but it happens with other powders as well.

It does not get real cold here, but I shoot all winter in temps to 0F and at least to 300-400 yards RL22 does as well as anything else.

Recently I had a 270 Winchester change POI with H4831 that had stayed zeroed for about 4-5 years; I think it was due to a change in powder lots......a shift in components will do it as well....so won't a squirrelly erector assembly or range conditions.




The 280 Remington is overbore.

The 7 Rem Mag is over bore.
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Originally Posted by Dirtfarmer
I see you're also an RL-25 advocate.

DF



Me too. I've tested and chronographed loads using a variety of very suitable powders and RL 25 works best in my 7mm Rem Mag, followed closely by H1000 and Retumbo.


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175gr sierra SPBT, RE22, 2900fps is where my rifle likes this bullet. 160gr Sierra HPBT gameking, RE22 3050fps is where my rifle likes this bullet. Both kill game very well. 26" 1-9" pacnor.


The anti American Constitutional party (Democrat). Wants to dismantle your rights, limiting every aspect of your constitutional rights. Death by 1000 cuts is the tactic. Each cut bleeds constitutional rights to control you. Control is the goal.
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Originally Posted by baltz526
175gr sierra SPBT, RE22, 2900fps is where my rifle likes this bullet. 160gr Sierra HPBT gameking, RE22 3050fps is where my rifle likes this bullet. Both kill game very well. 26" 1-9" pacnor.


Care to share charge weights and rifle type?

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All loads with Rem brass, Fed 215 primers, all safe in mine.
175 gr Woodleigh PP, 70 gr Retumbo for 2920 fps
160 gr Woodleigh PP, 70 gr H1000 for 2965 fps
154 gr Interbond, 71 grain H1000 for 3080 fps
140 gr NBT, 67 gr AR2213sc for 3100 fps plinking load and most accurate.
Rifle is built on an FN Mauser action with a 24 inch Walther barrel.

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Accurate loads in my 24" Savage are

62 grains imr4831 fed brass WLR primers 160 partition... 3050 fps
65 grains Imr7828ssc r-p brass fed215 primer 160 accubonds... 2915 fps

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Originally Posted by John_in_MS
Originally Posted by baltz526
175gr sierra SPBT, RE22, 2900fps is where my rifle likes this bullet. 160gr Sierra HPBT gameking, RE22 3050fps is where my rifle likes this bullet. Both kill game very well. 26" 1-9" pacnor.


Care to share charge weights and rifle type?
Rifle is a MarkX Whitworth, Barrel is a pacnor custom match stainless 26" Turned to match original barrel contour. Original stock, floated and bedded. Adjustable factory trigger. Brass is WW once fired, neck sized. Primers Remington 9 1/2M and CCI250, 175gr sierra BTSP #1940 63gr RE22 worked up in this rifle, 2905fps average. 160gr sierra HPBT GK, 65gr RE22, worked up in this rifle, 3057fps average. As normal, work up in your rifle.


The anti American Constitutional party (Democrat). Wants to dismantle your rights, limiting every aspect of your constitutional rights. Death by 1000 cuts is the tactic. Each cut bleeds constitutional rights to control you. Control is the goal.
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I had always used RL22 with 160g AB in mine with good accuracy. Last summer I purchased a bunch of 150g NBT Seconds and decided to work up a load with them. Had seen H4350 mentioned on the Fire for 150's and decided to give it a go. Worked up to 63.0 grains and quickly found that .050 jump was the ticket!

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Worked on this guy a month later.

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The following loads were developed in several Rem 700's, bedded in laminate Fajen, Boyd's stocks, or McMillen fiberglass.

120g Barnes triple shocks; 120g Nosler solid base
72.-73g of R#22
Rem brass
CCI250
bullet touching the lands
tiny groups, minus 1/2", often minus 3/8"

140g Barnes tipped triple shock or 140g Nosler Ballistic tip
Rem brass
9 1/2 primer
65.5-66.0g of IMR 4350
ballistic tip touching lands, .050 off the lands for barnes
Very small groups and you should expect the bullets to touch with this load
If your Rem 700 does not shoot this load, sell the rifle or replace the plastic stock!

150g Nosler Ballistic tip, 154g Hornady Sp flat base
Rem brass
9 1/2 primer
63.0g of IMR 4350
Bullet touching the lands
Minus 1/2" groups are normal

160g Sierra BTSP
61.0g of IMR 4350
Rem brass
9 1/2 primer
bullet .030 off the lands
Max load, approach with caution in your Remington!
The 160g Sierra BTSP is a premiere deer bullet, they just do not run off with this load. Dad, brothers, cousins has killed in excess of several hundred deer since the early 80's with this load. Deer not running off where I live is a big thing due to Jungle like conditions. Nothing fancy or high tec about this load, it just works in Remingtons and you can throw the load together in an stock rifle and it will usually shoot 1" groups. Again, work up to this load in your rifle. If there was a MAGIC load for deer in a 7 Mag, this would be it!

154g Hornady flat base
Rem brass
win mag Primer!!!! NOT fed 215
72.0-73.0g of R#25
154g Hornady Flat base
Bullet within .005 of the lands, if not touching the lands
Solid 3250 fps
Sub 5/8" groups at 100 yds
This is an elk load, many have been taken with it out to 550 yards! Extreme spread in velocity in single digits with this load! This load shoots through both shoulders on 350 lb hogs on broadside shots!

162g Hornady SST
Rem brass
Fed 215 primer
71.5g of Retumbo
Bullet touching the lands
3150 fps!
Groups in the minus 3/8" area, but you have to play with seating depth. My rifle likes a hard jam of .005.

If you want to shoot very small groups in your 7 Mags, learn to accurately measure seating depth, bed the action, freefloat the barrels, and for me...installation of muzzle breaks changed groups into sub 1/2" groups on all Remington 700's.

Not shooting the 7 Mag till the barrel is screaming hot(3 shot groups) and proper cleaning techniques to de copper every 20 rounds is critical on Rem 700's.

One good group does not mean much! We killed hell out of large mules riding mules in Az shooting from ridge top to ridge top shooting the above load with 140g nosler ballistic tips!

Ps. Barnes Tripple shock's usually copper foul less than noslers in my experience.

Good luck!

Last edited by keith; 09/06/13.
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Question for you guys running the 150gr NBT in your 7Mags. Are your getting anywhere near the Nosler manual listed top velocities?

Nosler shows 3248fps with 63gr IMR4350 out of a 24" tube. My Ruger likes 62gr but I'm only getting 2890. According to the manual, that's mediocre 280Rem speeds. I've had another member run my numbers through QL and it predicts that I can't get anywhere near 3200 at sane pressures.

I've got H and IMR4831 and RL22. Seems a lot of folks like these with the 150s, but some of the loads I'm seeing mentioned are above book max. Just wondering if anyone is getting accurate loads at anywhere near 3200 with these powders. If not, what speeds are you seeing with the 150s?

Just trying to decide whether to stick with the load I have or if there is actually enough extra velocity available out there to start looking for another load with a different powder.


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I'm convinced either Mr. Nosler either needs a new chronograph or they use nuclear primers.

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I'd suggest working up to 68g of RL22.


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Originally Posted by 16bore
I'm convinced either Mr. Nosler either needs a new chronograph or they use nuclear primers.


I'm beginning to think the same thing. I had a member check the entire list of suitable powders in QL and none showed more than 3180 before reaching max pressure. I would like to get to the 3050-3100 range if I can find an accurate load at that velocity.

Originally Posted by JGRaider
I'd suggest working up to 68g of RL22.


RL22 isn't listed in the manual for the 150s so where would you suggest I start? 65? 66?


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Originally Posted by TATELAW
Question for you guys running the 150gr NBT in your 7Mags. Are your getting anywhere near the Nosler manual listed top velocities?

Nosler shows 3248fps with 63gr IMR4350 out of a 24" tube. My Ruger likes 62gr but I'm only getting 2890. According to the manual, that's mediocre 280Rem speeds. I've had another member run my numbers through QL and it predicts that I can't get anywhere near 3200 at sane pressures.

I've got H and IMR4831 and RL22. Seems a lot of folks like these with the 150s, but some of the loads I'm seeing mentioned are above book max. Just wondering if anyone is getting accurate loads at anywhere near 3200 with these powders. If not, what speeds are you seeing with the 150s?

Just trying to decide whether to stick with the load I have or if there is actually enough extra velocity available out there to start looking for another load with a different powder.


I have no doubt that Nosler is getting exactly what it prints for velocities from the 7 Rem Mag. But they are getting those velocities from a Wiseman barrel(Wiseman for years made some very good pressure barrels for Nosler and others). These are likely made to very tight tolerances and will run pressures up with loads that will deliver lower velocities from other factory barrels.

The barrels of our factory rifles may have looser tolerances,different throat and leade configurations,made from different steels, different rifling, different lots of components,etc etc. This stuff can and does make a difference rifle to rifle and especially with a high velocity cartridge like the 7 Rem Mag. Other cartridges will easily show the same velocity differences and I have seen it with the 300 Win Mag.
as well,as just one example.Likely Nosler works loads in this very tight barrel just to be sure that we don't bump into pressure problems with our sloppier factory barrels but this causes us to see less velocity as well.

But the 7 RM is a very popular cartridge and has been chambered in many different rifles with different barrel characteristics.

I have a 24" Douglas barreled 7 Rem Mag that shows about 175 fps more velocity with a charge of H4831 and 160 gr bullet than a Krieger barreled rifle of the same length did. When manual data matches what I have gotten from my rifles it's more accident than anything else.

I know 4350 "works" in the 7 Rem Mag but it does not make my cut for powders in the 7 Rem Mag. I like powders a touch slower with that weight bullet...With the 150 gr bullet I have used H4831 and in my rifles have worked up to about 68 gr for about 3150 fps. This is a pretty "old" load and JOC used to use 69 of the WW II H4831 with 150 gr Partition for app. the same velocity.

When i see 3150 with a 150 gr bullet I stop,although a 26" barrel with more recent powders may do better.

I would reach for H4831 or 7828 with the 150. Recently I have been using 70 R25 and 150 BT for 3120 or so from a 24" barrel. Have not yet worked with the newer RL powders like 23 and 26. I'm still working on the last few pounds to R22 and 25.




The 280 Remington is overbore.

The 7 Rem Mag is over bore.
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