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Thank you. I do have some 255 Barnes loaded in Starline brass with 33gr of RL-7 that I will no longer shoot. I do have some Jamison that is comparable (10 grains lighter) to Winchester brass


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Just got back from the range with some interesting results. I had some 255gr Barnes loaded with 33gr of RL-7 (max book load) in Star Line cases and some in Jamison. I also had some factory Buffalo Bore in the same weight. The rifle was a Marlin 1875 (336):

Star Line: 1887, 1947, 1953
Jamison: 1874, 1858, 1877.
An honest 1.75" group at 100, and about 1.5" low of center bull

Buffalo Bore: 1970, 1977 but almost 8" high and 2" right.

Perplexing to be sure. The 200 gr Sierras shoot right at 1" about 2" high at 100. Load was again max book load of 35gr RL-7.


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North61 Offline OP
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That is interesting/ What was your speed on the 200 Sierra's. They are shooting way lower in your rifle than mine. Any idea what powder Buffalo Bore is using?

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I am going to try and shoot again today to double check everything to make sure the chrono was giving me accurate readings (there was a lot of sun out). The one positive indicator is the Buffalo rounds were pretty close in velocity so the odds of the speeds being off makes it less likely? I'll post once I get results.


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Jorgel, as the pressure went up with that heavy buffalo bore load, the thin barrel and all that attached tubular mag/barrel band stuff makes for some bizarre harmonics. Your loads are 40,000+ psi. That buffalo bore gotta be 50,000 psi.

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Ok gents just got back and ensured the chronology was accurate. I must have a slow barrel. I even tried two types of Barnes 255gr Bullets, the one designed for the 375 and the one for the 38/55 which seats much deeper. As you can see from the target, there was no difference in Point of impact with the full load of 33gr RL-7 OR using Star Line and Jamison brass. Velocity hovered around the 1870 mark. Initial three shot group are the ones with the connecting lines and a clean barrel. The three on target were after scope correction. Same for the 200 SierrasThe Buffalo Bore clocked at 1950, but horrible accuracy and way up and left.

The 200 gr Sierras (left target) with again a full book load of 35gr RL-7, barely broke 2,000 fps, but the nice thing is they were very accurate and printed about 2.5" higher than the 255s which as you can see, were smack on the bullseye. I guess I will accept the lower speeds and take the accuracy . This rifle will be used for hogs and deer down here. Once I get to our place in PA, I'll play with them at 200 yards. Again this is out of a Marlin 375. Oddly enough and goes to show you every rifle is different, my 94 Big bore, sighted in at 50 yards with the Sierras, prints dead on the bull but the 255s about 4" LOWER.

Let me know what you think

[Linked Image from i.imgur.com]


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Go to Corbin and buy a cannelure tool and it will make your life easier in those specialty situations. It adjusts to different lengths so as to place the cannelure in the desired position. As long as you have a lead core. I used it on .429 bullets I swaged in Corbin dies. Be Well, Rustyzipper.


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Jorgel, sounds like you're chasing velocity and haven't got where yah want. Pick up a canister of N120. The extruded kernels are smaller and denser than reloader 7, while having a similar burn rate.

You'll duplicate or exceed that expensive buffalo bore stuff....

https://www.vihtavuori.com/powder/n120-rifle-powder/

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Mainer: Actually, I think I'm ok, but yeah, I would like to get close to the advertised speeds fro the 200gr Sierras.


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You guys been having a lot of fun down here, I only have a M-94 35-55 WCF, but, with it and the 260-265gr Beartooth and Cast Performance hard cast FNGC bullets at 1855 fps, it would take an awful big animal to stop one, they go through deer and pigs [any angle] so fast you can see debris from the ground fly up behind them, double shoulder punched deer go straight down, pigs do the same unless hit in the ribs, then simply buck a little and walk till they fall over.

Cast and sized at .380 inch, I'd shoot and Elk or Moose with mine. smile


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Mainer is spot on the Barnes bullet in the 375. My son duplicated his loads with that bullet and turned his 375 into a very hard to beat bush gun. He took a nice bull moose last fall with it at 160 yards.

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I have given up on the 200 Sierra's they shoot well but so much higher than the 255 Barnes that it is not worth the sight in time. Wish my rifle regulated more like Jorge's. Glad to hear the 255's are soft enough to expand at longer ranges. I'll give it a whirl.

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North and Yukon,

Out of all intermediate power cartridges, the 375 win makes most sense to me. Model 94s can be had all day long for $150-200. As a berry picking gun, truck gun, bear over bait, wild boar or mountain lion over dogs or compact trapline gun it's deadly.

After the rebore, you've a true winchester fighting weapon, cheaper than a rossi 92.

Nothing carries better than your hand wrapped around the receiver of the little 94 carbine.

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Thanks Mainer, I am really happy to own one. As you say it's a super handy device in bear country. Going to do a lot of hiking over the next three months getting ready for sheep season and this little 6 pound package will be coming with me.

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North, Yukon or Mainer, hate to butt in, but have any of you men shot large heavy game with 260-265gr hard cast flat nosed gas checked bullets in 375 Winchester/38-55 WCF? I have no experience in doing so, just wondering how my load at 1855 fps powered with RL-7 may do on the big animals.

Thanks in advance.


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Gunner, I haven't but the heavy bullets will not stabilize in the 1:12 of the 375 Winchester. At least not for me. On the 38/55 they are very accurate. Drop Woody a note. He loads them in his 38/55. jorge


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Originally Posted by jorgeI
Gunner, I haven't but the heavy bullets will not stabilize in the 1:12 of the 375 Winchester. At least not for me. On the 38/55 they are very accurate. Drop Woody a note. He loads them in his 38/55. jorge


You need to try that again. My regular load in my 375BB is a 300gr cast FN and it’s very accurate.

The long range 38/55 users set up their rifles with 1:12” twist barrels and they stabilise even heavier 330gr pills at BP speeds.

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Gunner, I haven't. I have no interest in hard cast anything for hunting moose caribou and bear. I like a smidgen of controlled expansion from the pure copper/soft lead Barnes O bullets.

Not even in my 357 mag trail pistol do I use hard cast. I load that with 180 grain swift A-Frames.

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Originally Posted by JFE
Originally Posted by jorgeI
Gunner, I haven't but the heavy bullets will not stabilize in the 1:12 of the 375 Winchester. At least not for me. On the 38/55 they are very accurate. Drop Woody a note. He loads them in his 38/55. jorge


You need to try that again. My regular load in my 375BB is a 300gr cast FN and it’s very accurate.

The long range 38/55 users set up their rifles with 1:12” twist barrels and they stabilise even heavier 330gr pills at BP speeds.


What is your load? I have a bunch of really nice cast 275 gr bullets and heavier ones as well, that I would love to shoot.


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Thanks Jorge, I wasn't aware the '94's in 38-55 and 375 had differing twist rates, 200 yard steel with mine and a receiver peep is pure cake my Friend, very accurate to boot.

Mainer, thanks for that, and not to derail the thread, but what you said about the Barnes' makes me think I need to stop wasting my heavy jacket 250gr Barnes' in my M-71 348 Winchester, bought 4 boxes from Alaska Bullet Works, was going to reload all my brass with those bullets when the Barnes's were shot up, maybe I should be hunting with them instead, run them an easy 2250-2275 fps.


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