I like sets with multiple barrels, helps with travels. A word of caution on shotgun barrels on rifle actions. The firing pin on a rifle is more smaller and stronger than a shotgun, and thus you may incurr pierced primers. I have a 9.3 with 20 ga. barrels too. Overcame the problem using by using federal shotshells. They didn't pierce. Sure is handy when you want a ginea fowl or grouse for dinner. Also using buckshot loads for small night cats etc.