Re: colt revolvers in 455
Colt made New Service in 455. I think some Single Action Armys were too.
Smith made some of their N frames in it.
Meddle not in the affairs of dragons, for thou art crunchy, and taste good with catsup - George of Lod, Year of Our Lord 297
I always take precautions.
Beware the Evil Bullet Fairies.