Seneca Wing Shot/Double Shot Barrel 12.2mm Choke 12.2mm choke Fits Seneca Wing Shot and Double Shot air shotgun Screws onto end of barrel Enjoy a longer effective range, increased accuracy and a tighter pattern with your Seneca Wing Shot or Double Shot by adding this 12.2mm choke. You'll notice an improved shot pattern in consistency and density. By reducing the inner barrel diameter from .494" to .480", this 12.2mm choke delivers a pattern approximately 10% tighter when shooting the Air Venturi #6 and #8 loaded shotshells.