For plastic shells I like the "Federal Gold " [ plastic base wad]- more volume for my load . Don't use any hull with paper base wads that you pick-up . If they're damp inside [ and hell to dry out ] you'll get bad reloads . I had to cut apart 16 boxes of shells once because of this - no fun . With the F.G.'s and a CB1138-12 wad you can use 1oz of shot and 80 to 90grs of Pyrodex . I use a Mec-650 and no powder bushing for 92grs , or 46A bushing for 80grs . The 1 3/8oz wad has a short cushion height that allows the big powder charge , and 1oz of shot will just fill the wad. If useing a progressive reloader make sure you hold the lever down and tap the powder bottle before you let the handle go back up - it takes a bit longer to fill the charge bar [ that's another story about 12 boxes of shells ] . With the above load I shot a 44/50 in S.C's with the Parker boys last year . I'll never do as Jim did , a 25 straight in skeet with a flintlock , but is it fun to shoot smoke and you may never go back . Good luck - Paul