I'm not sure what the twist is.. I looked and looked but couldn't find any markings. I will definitely make note of the SST bullet and try it out.

Yes I couldn't be more happy with the gun. I had a CVA Hawkens and let it go last year. I kicked myself for selling my only muzzleloader. A few months ago I decided it was time for another so I made a trade for the Lyman through the barter section on Craigslist. The guy said he didn't think it had ever been shot.

After taking it to the range and seeing how well it shot, I knew this one is a keeper!