If you use loose powder, try BlackHorn 209. Cleanest burning powder on the market. I can fire 30, 40, 50 shots without swabbing or cleaning and accuracy is not affected a bit. Its pricier than 777, but trying loading after 3-4 shots with 777 and you'll see the difference. 100 grs., 200 gr. Hornady XTP, 1 1/2-2" groups all day long.
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