My Cogwell & Harrison is a regualr choked gun that has rifling cut into the choke. It you look down the barrel from the breech, it looks like a regular shotgun but from the front, the rifled choke is visible. Looking at the gun, you would think it is a regular shotgun but realize it has rifle sights.

Ken Owen regulated my Cogwell for the previous owner. Ken is a double rifle specialist. He is also a very nice guy.