i took a completely different tack on the "home made cap" route, but mine was from the aspect of reducing the number of different components that i keep around. realizing that percussion caps and small rifle/pistol primers are the same diameter, i got some aquarium tubing, cut it to proper length, pressed the primer into the length of tubing, and went shooting(yes, i know, not pc; but it does work!) i've never had quicker ignition from a sidelock, and there are no cap fragments to deal with. interestingly the plastic tubing seems to be considerably stronger the brass in the caps, having gotten up to three or four firings from one length of tubing!