Carlson's Sporting Clays Choke Tubes are crafted from high-quality 17-4 stainless steel and precision-machined to ensure superior performance compared to standard Choke Tubes. These tubes feature a 25% larger parallel section, resulting in more consistent shot patterns for improved accuracy. Designed to accommodate a variety of ammunition types, you can use Lead, Copperplated, Nickel Hevi-Shot, Bismuth, Tungsten or Steel Shot with these Choke Tubes. For optimal results, it's recommended to pattern your choke tube with the specific shotshell load you intend to use in the field, as different ammunition can produce varying patterns even from the same choke. With Carlson's Sporting Clays Choke Tubes, you can enhance your shooting performance and achieve the precision you desire.