Steve, Question #1- Yes, with very good results, especially with cast bullets. It's been a while and the memory is foggy but I'm thinking 300-330gr'ers in the 1400fps range and 405's at about 1200. I should have some notes hidden around here somewhere. I'll look!
Question #2- DEFINATELY, I just don't think I'd shoot mine anymore w/o them. Especially with the muzzle tamer model. Well, this thread is about recoil...so here I go...I'm gonna stick my foot in it. Everybody says a muzzle tamer reduces recoil. I say a muzzle tamer(and here I'm talking about TC's version) CHANGES recoil. I'd compare it to shooting a Ruger Blackhawk and S & W M29, both in 44Mag. One jumps up and twists and the other one nails you straight in the palm of your hand. I have two 45-70's. One without and one with tamer. At first I thought the muzzle tamer was the trick, and then I realized what a pounding I was taking in the palm. Now I really believe I'd rather shoot the one w/o. My barrel w/o tamer is one of the old 16 1/4"er's. I've really noticed a difference since arithritis has crept into my hands. Lordy, I've rambled way out'a sight. GOOD SHOOTIN', Walt
BTW Steve, quit sending all that snow here to the east, I wanna go shoot!!