Whitetail hunters in shotgun zone have an option to take a longer shot when carrying one of these rifles. I built 3-460 S&Ws from H&R single shot shotguns.(20ga & 16ga) Using Green Mountain barrels 20"x1" 1&16 twist I carried one this season with great success at long shots. Also, if you have a standard short action bolt (308,243,22-250' 300 sav. ec.) you can have it rebarreled to the 45-raptor the cartrages are the same eccept one is rimed one is not. If you have an H&R or NE single shot that has the push down barrel relese it qualifies for conversion. Give me a PM if any questions.