BlackBore Shotgun Chokes are the best shotgun chokes on the market today at retarding the shotgun shell wad!
Retarding the shotgun shell wad at the moment the wad/shot column leaves the barrel will prevent the wad from blowing through the shot column resulting in denser and more consistent patterns.
The ultimate goal when shooting a shotgun is for the shot shell to do its job of hitting the intended target with as many of the pellets as possible and giving a pattern that is dense and consistent!
BlackBore Shotgun Chokes: The Cutting Edge In Choke Design!