I have put probably two hundred rounds through my Pietta brass frame '58 "buffalo" and I have never had accuracy problems. 4-5 inch groups at 50 yards is pretty good for me, and I really don't know how much mroe accurate I could be. Of course, you are probably looking at a diferent model, but the company has made some pretty good products in my opinion. As for the nipples getting messed up, not yet on mine, but then again mabey I got a good one and somebody else got a bad one to make up for it.