Breech choke - Carlson's Choke Tubes Tactical Breacher Choke Tube

Although this has not been used as a Breech, it is a very effective device when used as a full choke. Because of its design it provides a broad use of loads with varying types of metal content, and eliminates the need for changing chokes to accommodate the shell content. I have been able to achieve a consistent tight group using 00 at 20 to 25 yards. This is within an 8/9" diameter circle. Therefore I would recommend this product.