Improve your shotgun with the Carlson's Choke Tubes CORE Winchester 12 GA Long Range Choke Tube. It is dynamic enough to be used by everyone from novices to experienced hunters, without sacrificing any quality. The choke is designed for all shot types and most sizes, perfect for a variety of outings from hunting doves, ducks, pheasants, geese, and other small game, to shooting trap and sporting clays, and it can be shot with lead, matrix loads, steel, duplex loads, bismuth, blends, tungsten/TSS, and hevi-shot, making them versatile.