I have not gone hunting since my youth. I have been invited to an anual pheasent hunt in SD this fall. many years ago dad passed on, and I received a few toys. One of which is a late 60's to early 70's Rem. 1100 12g auto. It is stamped as Trap, with full on the barrel. I beleive it is 30" if im measureing correctly (tip of barrel to rim in the breach) I know there are replacement barrels avail. for this gun but not sure which is best suited for pheasent, or if the one I have is good to go. I feel like a fool not knowing some of the answers but dad was the answer man and he passed before we got in many hunting trips. any help would be greatly app.