I've been shooting a Pietta Remington .44 and all I had were some old tarnished Navy Arms English caps... which turned out to fit just right and were hot and 100% firing.
After I ran through those 100 or so I tried to use new CCI #10's and was disappointed, too tight and mis-firing and left a disc-shaped residue on the nipple faces that clogged them up. Sounded weak too.
Made me start thinking about how important the caps were in the whole set up.
What's the best cap?