Well I'm gonna go out of my way and show you something since you are skeptical about the Hevi-13 6's or 7's.
Now I have heard a few guys that say they heard this ammo is going to be discontinued. But I can't say for sure. I think I even sent this to you in a pm. But find a gun and choke that will shoot this load to 200 shot or maybe 220 in a 10" at 40yds, and no turkey that walks will escape its wrath at 50yds to maybe even 55yds. It will out penetrate a lead 4 due to its weight and hardness of 15g/cc.
http://www.midwayusa.com/product/487...l-wad-box-of-5
You would upgrade your turkey load tremendously over the Hevi-13 5's if you can get this to provide the patterns I mentioned. But this stuff likes a nonported choke or at least that the census from most guys that shoot it.