I shot numerous Lyman and T/C guns over the years. Usually in .54 cal.
Then over a year ago I got the bug to find a gun that shot better than the 1-48" twist would allow with a patched round ball. I found a used T/C Renegade at Dixon's. The previous owner had ditched the factory barrel and replaced it with a 32" Green Mountain barrel, 1-60" twist. My usual load is 90 grains of FFFg, .530 ball, .020" patch. I tried that in this gun and my first three shots all touched at 100 yards. Now it was just under an inch to the right, but I didn't touch anything.