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Subject Topic: 375 H&H Lead Bullet Load Post ReplyPost New Topic
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Ctrane
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Posted: July 20 2004 at 3:51pm | IP Logged Quote Ctrane

I want to shoot a 300 gr. cast lead bullet from my 375 H&H rifle. Does anyone know what load would work best?
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LAH
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Posted: July 20 2004 at 4:08pm | IP Logged Quote LAH

You could start with about 10 grs. of Unique or maybe 36 grs. of IMR 3031. The first load should give you close to 1100 fps, the latter maybe 1600.

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Ctrane
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Posted: July 21 2004 at 3:54pm | IP Logged Quote Ctrane

Thanks for the suggestion. I have previously used 44.5 gr of IMR-3031 with a 270 gr lead bullet, and had good results, but I was looking for something more than a low-recoil practice load for the 300 gr. bullet.
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JohnK
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Posted: July 21 2004 at 6:11pm | IP Logged Quote JohnK

Creekers suggestion of 10.0gr of Unique should work. The Lyman Cast Bullet Handbook has quite a few low pressure loads for the 375 H&H, but only goes up to 269gr. They list 13.0gr of a 269gr FP @ 1,220 fps, up to 17.5gr for 1,460 fps. They pretty much just list handgun powders, from Red Dot to Blue Dot.

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LAH
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Posted: July 22 2004 at 11:02am | IP Logged Quote LAH

Grab you a starting load of IMR 3031 and go from there. Sounds like you know what your doing. Let us know how it turns out.

And BTW welcome to the board.

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macnmac
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Posted: August 03 2004 at 8:53pm | IP Logged Quote macnmac

The Lyman 45th edition listed accuracy loads, 24 gr. SR4756 for 1686 fps with the 375248, 25 gr. SR4756 for 1600 fps with the 375296. Lyman advises that these loads are max. They use No. 2 alloy. I have not tried these, but have been pleased with accuracy of SR4756 in the 44 Magnum with the 429421. There have been very good results listed with the 375 H&H in the Fouling Shot. I can look up some winning loads if you would like.
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Ctrane
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Posted: August 31 2004 at 11:18am | IP Logged Quote Ctrane

Results with IMR-3031 & 270 gr lead FN/GC (Lyman #375449). I began with 50 gr and worked up to 62 gr; sometimes 2 bullets were together but never all 3; velocities were erratic--55.3 gr gave low of 2115 fps and hi of 2220; 62 gr lo of 2460 and hi of 2475. I next tried a 285 gr FN/GC (LBT 376-300-LFN) with 60 gr of Reloder 15 and obtained a one-inch group for 3 rds. Velocity was lo of 2311 and hi of 2314. This bullet was supposed to be 300 gr, cast from linotype. I recast using Lyman #2 alloy and obtained 295 gr. bullets with this mold. I plan to experiment further using RL 15.
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