Beautiful day at the range this a.m. Sun was shining, the birds were singing-couldn't hear them though cause I had my ear plugs in. Anyway, I thought I would experiment with the screw in chokes that came with my 12 gauge Remington Competition Master shotgun. I also shot my 870 Remington with the 18 1/2 inch barrel. Firing 9 pellet Fiocchi buck shot rounds, at 7 yards. Seven yards. Thats 21 feet for you people not blessed to live in Gods country. Jack, are you listening? 1. Modified cylinder 2. Rifled choke. My photo of the Improved cylinder didn't turn out, but as you might guess it was wider pattern still. My 870 had a still wider pattern then the Competition Master with Improved cylinder. Of course it has a shorter barrel. My question to you reloading gurus is, how does a rifled choke work on smoothbore shotgun? Rifling at the last 3 inches is going to make a difference in, what, slug loads? Hard to believe something travelling down about 20 inches of smooth barrel is going to be stabilized in 3 inches of rifling at the end of its journey down the barrel. I keep the 870 in my bedroom for home protection, but after looking at the patterns it throws compared to the tight patterns the Competition Master holds at across the room distance, I think I will be changing my "holy crap, what was that, better grab my shotgun-gun.