Select from the choke tube constrictions and designs for your system in your gauge. Total Barrel Dynamics is the combination of Vector Pro forcing cone lengthening, Back-Bored Technology and an Invector interchangeable choke tube system working in unison to improve shot pattern performance. May 09, 2020 · Specialty predator chokes like Carlson’s Coyote Choke Tube are designed to keep large T shot and buckshot patterns tight for extended ranges. Some companies even claim their chokes are lethal out to 70 yards, which is a serious accomplishment with a shotgun.
Jan 18, 2012 · My benelli has a bore diameter of .720 and if I use a choke tube with a .06 constriction , i will end up with .660 exit diameter. if i use a choke tube with a .055 constriction, (not quite as tight as the previous ) i will end up with an exit diameter . of .665 Both of these are very tight chokes