Hello CHIP,
Very good, another true 8 bore shooter!
Mine is a G.E. Lewis fully rifled double from circa 1879, hammers & Jones underlever.
I too got my 8 bore cases from Rocky Mountain and dies from ch4D. Twist is about 1:90 and .855” groove to groove shooting 10 Drams and an .860” round ball.
No case, so I’ve never pursued getting all the period correct tools.
- Mike