[John Rogers]

There are bore sizes all the way from 22 caliber (rook matches) up to 4 bore double guns that are monsters! I would try to find some local BP shooters to see what they have, use and recommend. The normal bore sizes of 45, 50, 69 are used as they are much more common and easy to get balls or bullets for. I forget the conversions from shotgun bore sizes but we do have some who shoot .410, 20 or 16 ga with patched round balls. They then use the guns in the BP trap shoots too.

We have a couple shooters at our matches that shoot 30 caliber percussion long rifles but some times the steel target will not fall over.