The Carlson's Bone Collector Turkey choke tubes offer a precision 17-4 stainless steel, matte black finished solution designed for Benelli and Beretta 12 gauge shotguns, delivering a super tight, pattern tested constriction that produces extremely tight patterns with a wide range of turkey loads including lead, nickel-plated, copper-plated, bismuth, hevi-shot, tungsten, and TSS. A longer taper section to the constriction creates a parallel portion that helps minimize flyers and maximize pattern density, while the extended design ensures consistent performance across multiple shots. Each choke has been pattern tested to identify the best results with four through ten shot sizes, providing dependable performance for turkey season when precision matters most. This extended/ported turkey choke is crafted to withstand demanding field conditions, featuring hardened 17-4 stainless steel and a non-reflective finish that wont spook wary gobblers. Keep in mind that using shot sizes larger than #4 may benefit from a more open choke for optimum patterning, and always pattern your shotgun with the specific load you plan to use to achieve the best possible success on birds.