I have a Pedersoli Gibbs African Hunter, in 72 caliber.
Barrel is .72 caliber,
Broach rifling - .004" deep. 1 in 75" twist.
6 lands - .724 & 6 grooves - .732.
Currently I'm shooting a .715 roundball with .010 patch with 120gr FFG. I'm getting about 4" at 50 meters. Its a real bear to load and I usually find it easiest to mallet the ball to start it. I am considering going down to a smaller ball, but the most common is .690 so that's too small really.
Id like to try something different altogether and with my .50 I shoot Lee R.E.A.L bullets. They really are easier to load compared to the patched roundball as the fouling builds up. I read that they work best is slow twists. Obviously Lee doesnt make it this large.
So I have two questions:
1) do you guys think a R.E.A.L. bullet, scaled up would work?
2) who could custom make it?