The Accurate Reloading Forums THE ACCURATE RELOADING.COM FORUMS Guns, Politics, Gunsmithing & Reloading Your Favorite Loads - Share Them With Us Whats your fav. 375 Weatherby loadGo | New | Find | Notify | Tools | Reply | |
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with 300 Swift A-frames. Hodgdon says: H414 = 79-84 H4350 = 80-85 H380 = 70-75 Hybrid 100V = 80-86 These are higher than QL by a bit. I have RL15 and RL17 too | ||
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I haven't loaded the A-Frame in the 375 Weatherby, but loaded the 300 TSX over 86 grains of H4350. That was with Weatherby brass and Fed Magnum Large Rifle primers. Seems like most data is soft on the Weatherby cartridges, I suspect because the free-bore/long throat deal and the fact the throat length varied so much. Originally it was .750" in length, then was shortened to .375" and until the cartridge was standardized, you had gun mechanics grinding reamers to every other length imaginable! | |||
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Loaded 81 and 82gr of H414 . 300gr Swift A-frames Hope to get to the range, gotta remember the magnetospeed | |||
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Damn close to this load. I use 88 gr H4350. The rest being the same. 2790 FPS out of a 24" pipe.
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82 gr of H414 seems good  | |||
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375WBY 300gr NOS/PAR 86gr H-4350 Win H&H cases fire formed Fed 215 primers 2750fps (24" rem barrel) 350gr Woodleigh PP 88gr H-4831sc Win H&H cases fire formed Fed 215 primers 2510fps (24" rem barrel) The 300gr load will shoot 1" to 1.5" groups. The 350gr woodleigh is sub MOA. Work up to these loads as usual. They were fine in my rifle. Could be warm in others. Steve | |||
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