nchawkeye
58 Cal.
When I built my .54 in the '80s, I ordered a Ed Rayle barrel, asked him what twist, he said 1-72...That's what she has and she groups well from 50-120grs FFF...Never tried less, I have a .40 for that... I settled on 80grs FFF for a hunting charge simply because it gets the job done and leaves less fouling than larger charges...
I think more than twist, rifling depth is critical...A barrel made for round balls with the deeper, cut rifling will be more forgiving than a button rifled, mass produced barrel...
I think more than twist, rifling depth is critical...A barrel made for round balls with the deeper, cut rifling will be more forgiving than a button rifled, mass produced barrel...