This is all pretty interesting. I have a .58 custom shop renegade that does ok-ish with round balls but sucks balls with conicals in spite of the 1-48 twist ... same as a "Big Boar" I used to have with the same twist that shot them great. I've been thinking about keeping the .58 barrel for round ball use and picking up a faster twist .54 green mountain for the days I want to shoot conicals.
I wish GM offered a faster twist .58 ... I'd be on that like flies on stink.
