I have one very similar to that one. I have shot it a good bit (most in competition and preparing for competition) with black powder as well as smokeless. Mine is a REALLY good piece.
Ive got one like that in a 5.5" 45Colt Bisley Vaquero. Got teh Ruger Faux Ivory grips on it too. Pretty as all get out adn a real shooter. Wish I had another to go with. Can never have too many I figure.