I use a Remington 870 Express Super Magnum with 3 1/2 Federal 00. I have a pattern master choke tube and I feel comfortable shooting at a standing deer out to 60 to 70 yards. If I can not get the deer stop I feel comfortable out to 40 to 50 yards. I killed my biggest buck to date in 01 with a 75 yard one shot and the deer only went 35 yards or so. Good luck..