A coworker of mine only shhots ball an patch in a traditional percussion cap ML. (Nothing against the new inlines, they're just not his cup of tea.)

Anyway, he puts a small amount of hornet's nest material between the powder charge and the ball and patch. The idea is that as it burns, it slows down the flame from burning the patch, elimination blow by (is that the correct term?) and increasing accuracy. He says it's a trick from waaaaay back.

Anyone heard of this?