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I have an older Speer book from the days when they copper crusher tested loads. The load I am interested in is the 243winchester and 85gr BTSP with H4350. The old book has it as 46gr which is stiff compared to Hodgdon and others. I would be grateful if someone could look at the latest Speer book and tell me the current load for this bullet and H4350 (and MV/barrel length) | ||
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From Speer #13< !--color--> .243 Winchester 85 gr Spitz-BT (Speer number 1213) H4350 46.0 gr at 3235 fps H4350 42.0 gr at 2914 fps C.O.L.: 2.625 inches Test Firearm: Ruger M77 MkII Barrel length: 22 inches Case: W-W Primer: CCI 200 (used with loads listed above) Note from the .243 Winchester page in manual: "These loads do not exceed the industry maximum pressure of 52,000 cup." Speer manual #12< !--color--> shows the exact same data for this powder and bullet. I doubt if Speer retested the load for manual #13< !--color-->. My guess is that they just republished the manual #12< !--color--> data (for this particular powder and bullet). I hope this is helpful.... -Bob F. | |||
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It ain't Speer, but: H-4350 From 34.5 grains to 46.0 grains Remington 9-1/2 Primer | |||
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Gents, Many thanks. 46gr gives me 3,300fps from 22" and maybe the faintest hint of the start of a crater in cool temps. 45.5gr is 3,250fps, accurate and no pressure signs. | |||
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