I have a 5100 in very good shape that I bought a few yrs ago. I mostly bought because of it's ga, condition and price. Just been sitting in the rack .This yr i am going to turkey hunt again and was thinking of having this gun along as a third gun back up as I plan on hunting 1st tag with a dbl bbl 12ga Black powder 2nd tag a 12ga Huntsman BP. But if I end up with heavier rain both of those may go the way side. To my ? . I was was checking the bores of this 5100 and they both measure cylinder bore isn't that odd for a dbl bbl that appears to be for birds 26" bead sight with one other tiny bead near the center of the lenght on the rib. Single trigger . Would this be for like doves or what? Also what about slugs being it's cylinder bore both bbl's measure .667. I have some stuff to try and pattern it any suggestions on what ammo might be best .These are mostly unhunted turkeys and I have brought them into longbow range in past yrs so i know how to get close. Thanks for any help. Kurt