Hey all--
I've checked every reloading manual I can easily get my hands on (including the Lyman Cast Bullets 4th Ed.), and Googled pretty extensively. Everywhere I can find load data for 7.62x54R, it will give me velocities for min and max loads, but pressure info seems to be nonexistant.
I'm getting ready to start developing an accurate high velocity cast load for my Mosin, and want to find the optimal BHN and alloy to use for my bullets so I can push them up to at least 2500 FPS. Hard to do that if I don't even have a shot in the dark for chamber pressure information.
Does anyone know where I can find these figures?
Failing that, do you think using COWW alloy, heat treated to around the 22 BHN would be a decent starting point? I think with some dedication I could probably get my COWW alloy up to around 29 BHN, but that might be overkill for a 185 grain bullet...