Was up at RST the other day and talking about Turkey loads. The recommend that I just shoot their 1 1/4 oz loads of size 6 at 1,200 FPS out of my older guns. Pressures are still very light and they said they will certainly do the job at 35-40 yards out of normal .040 constriction out of either my old Parker VH or my Fox Sterlingworth. Wasn't a hard sell at all, and I left with three boxes of those, plus some 20 gauge spreader loads and some size 7 (yes 7) 16 gauge loads. Those guys up there supply some really nice shells that work well with my kind of guns.
PS. Went back and looked at some older posts of the fellow who sent these shells in for testing. Looks like these were the second lot he sent in. First lot had an average pressure of (17998 psi) and he had to rework the load to bring it down to the current 12,500 PSI. BTW, his gun is a Winchester model 1300. I imagine that your shoulder would know it when you touched off those 18,000 PSI loads.