BLACK AA 410 HULLS

I am having difficulty loading Winchester black AA 410 hulls. I have used a variety of different powders all in the 12 grain area. I have used Winchester, Remington, Clay buster and the new HS wad. No matter what I do, with pressure or with no pressure the shot is close enough to the top of the hull that when you crimp the shell closed the shot keeps the crimp from closing correctly. I feel it is a wad problem. Any ideas? Is anyone still loading some of these old Winchester black AA 410 hulls. If so what wad and powder are you using?

Thanks

Jon