Pure Gold extended ported turkey chokes are designed to strip the wad from the shot column to give you the ultimate pattern that you have been looking for. They are not designed to increase maximum range, rather they are designed to provide more shot in the kill zone at reasonable ranges. All of our Turkey chokes are made from a top-grade 17-4ph heat treated stainless steel for maximum strength and durability. All Pure Gold Turkey Chokes are HEVI-SHOT and HEAVYWEIGHT shot compatible. The Rem-Choke turkey choke has an exit diameter of .680.