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Hello C. ,
I must add, to use the 7-08 Rem loads, MAXIMUM manual loads, as a normal loads in a 7x57. The volume difference is enough to do that. I, also, don't want to push the working pressures in a 7x57. To load a 160 grs at 2700 f/s and a 175 grs at 2600 f/s (with the correct powders, of course) is to be at NORMA o RWS factory loads pressure levels.
Good luck!!
PH
FWIW, when I chronographed loads out of my 7x57r drilling, the Norma ammunition was a full 200 FPS below published figures. Ammo still shot well, so no arguments there, but FYI.
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