@Boom Stick, the 1 in 48 twist was good enough for Jake Sam Hawken and a lot of other rifle builders for their patched round ball barrels and there accuracy was certainly better than acceptable. If you want round ball accuracy, you need to consider depth of grooves. I have several 1 in 48 twist barrels with grooves of 0.010" and better depth that perform very well. Douglas barrels were 1 in 48. Bill Large 1 in 48. You get good performance with less powder.