With pellets or any powder other than BH 209, most people swab the barrel between shots to maintain accuracy. Just a light lick on the patch and run down the barrel. I like to hunt with a clean barrel, so I swab twice between shots. It is a pain, but it also cools the barrel between shots, which tends to improve group size. If you only shoot a few shots before the season, or the price doesn't botther you, go with Blackhorn 209. If you shoot a lot, and want to save money, Black MZ is very inexpensive, and shoots well in my CVA .50 with Harvester PT Scorpion 300 gr. bullets. If you want to hunt with a fouled barrel, you can fire a couple of primers off, and that will do it. The primers are non-corrosive, so it isn't a problem to hunt with the barrel fouled that way. All of the substitutes (except BH 209) are very corrosive and attract moisture, so be sure the clean the barrel thoroughly after each range session. The reason BH209 is so popular is because you can shoot all day without swabbing the barrel, and cleanup is just like a centerfire rifle. Most peopole here like loose powder, because you can vary the load by 5 gr. increments to improve your group size. There are people on this site that have lots of knowledge and experience. I learn something almost every time I log on. Enjoy.