Re: BP cap and ball cartridge conversions...
You know, I've wondered, a time or three, if you would put an OM 45 Colt cylinder in an Old Army, and it would work. You'd have to play with the hammer, so couldn't use that for caps any more, but it seems like it should work.
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.