I agree with the post above. I've used pyrodex and 777, and 777 shoots better, is less corrosive, and easier to clean. Though I do get the crud ring, I clean between shots at the range, and it doesn't make one bit of difference while hunting. I mean, we only get one shot anyway, and if there is a crud ring, it doesn't prevent me from reloading. My main concern is how my rifle will place it's first bullet from a cold barrel, and I Can shoot an inch or so all day with my Encore and 100 or 150 grains of 777. See what shoots best, but don't overlook 777 because of the crud ring.