well I shoot the exact gun. 870, smooth bore short barrel but with a scope. And you would be amazed with the gun off a rest. I'm not the best shot but at 50 yrds I have a 3" group and at 100 yrd I am always inside a pie plate. And not much drop, I don't care what the box says. And oh yea, I shoot the cheapo winchester rifled slugs from walmart. $9 for a box of 15.