On a 30 lb freon jug. I have a witness who is a member here that will soon be along to tell you how many I missed trying to do it again. Hickok45 I am not. All in all a VERY fun day, the weather was awesome and we burned a bunch of powder. I shot the Mak90, AR, several .22 rifles and more, so now headed to the store to buy ammo...............
Jim
Jim