03-13-2020, 06:37 PM
1Shot Wrote:You have to know your rifle but in both of mine this is how I figure I am above safe pressures. First off I use a chronograph. If I am getting lets say 50 to 75 fps over what would be considered max velocity with that weight bullet no matter the make of it out of the same length barrel I know I am either at or about max. Then if I am getting ejector swipes I know I am above pressure and then back off. I have polished the edge of my ejector holes to remove any sharp edge or burr that could cause a premature swipe. It also depends on your cases also. Factory Hornady 123 SST ammo I fired or using new Hornady cases I have discovered I think has a soft case head and you can get slight ejector swipes on the first firing with safe loads. But after that first firing it seems that the case head hardens up enough so swipes do not appear is one thought. Another thought is the new cases have slightly less capacity and cause higher pressure than the same load in a previously fired and sized case. Ain't hand loading fun trying to figure stuff out. LOL
GotchÂ’ya, thanks.