RE: Powerbelts in a caplock
I shoot a caplock with a 1:48 twist, 295 gr Powerbelts, 90 grain powder load. At 75 yards and iron sights, I can hold about a 2" to 3" pattern. Not too bad for these old eyes!
Don't know if it makes a difference in accuracy, but my ML is a replica of a Kentucky long rifle, so very long barrel. Don't remember length, but so long that I couldn't find a hard case long enough, so had to make one.
Bruce