nowhere in this post do i see the barrel twist or bullet dia. mentioned. (sabot or bullet engraved.) I have been tinkering all year with t/c maxi-balls with my renegade. tweeking the lead alloy for a good fit. I will say this.............. these shoot better if you do not use max loads. Pictured is a 3 shot group at 100 yards with a t/c maxi-ball. Not bad for an older guy.