Sportsman's Warehouse in Meridian has CCI magnum #11 percussion caps. That makes two stores in our vicinity that finally have #11 caps. Black powder supplies are slowly becoming more available. Having said that, no "real" black powder yet although my son did bring me two pounds of Schuetzen FFFG black powder. Really fouled the rifle but it provided quite a "fireworks" show, smoke, noise, knocked all the spider webs down from the rafters in the covered shooting "stand".