Thread: Speer 30 grain TNT Green .224

It might not like top velocity either.the 50grn spsx of old was good to 3000fps but to soft/fragile for faster.proceed with caution. Now if backed up to wall and HAD to create data.i would look at charge weight and projectile weights for nearest you can find and continue the line ....eg in a lot of bigger cases ten grains bullet is about two grains less powder... Different in smaller case but if put on graph it's still near as damit to a straight line.