I got the info i needed thanks, I bought the dominator from doc white he sent a rifled 6" choke tube with it for roundballs!You use shot with the Tominator, not any round ball. I've had one since they came out, excellent gun all around. Great turkey gun! Go to Gary Whites write ups about the gun and use the stuff he recommends. You can get it all from Brownells. This gun ain't no pip squeak either. Ninety grains P powder and a shot cup full of #7.5 bismuth shot give you a very nice bump on the shoulder.