You have to work out your own system but the way I do it- some things you'll need every reload (ball, patches, caps/capper, etc) and some things (tools, jags, co2 dispenser, etc) you won't need that often. I carry some patching material (ticking) and I wrap up all the stuff I don't use that much and put that in the bottom. I squash it down so it forms a shelf and then I have a small bag with a wood stopper for the balls, a short starter, an old cap tin for lubed patches resting on top. I shoot percussion and have a capper on the bag's strap. Pretty fast and simple.