RE: Best caliber?
I built a new 58 cal round ball gun that hits like a freight train. It will put a dent in 1/4 inch steel plate at 200 yds. Looking at crono tables after Crono-ing it hits as hard at 200yds as a .54 hits at 100yds, or as hard at 150yd as 54 hits at 75yds. Great balls of fire.
David/Mo