i use the Undertaker choke, an older model that i think is .695? and winchester supreme's, 3.5" mags, #4's., with my ultimag. and while i wouldn't recommend it for anyone else, i know that i can safely, and quickly down a bird at 50 yards. i try to get them inside that range when possible, but last spring's birds fell at 47 and 42 yards. both dropped like rocks, as did the first bird i ever shot at , which stood at 50 yards.. the combo does in coyote's pretty good too.