I'm in the same situation (1100 with 2 3/4"). It seems like Winchester has the only shells for 2 3/4" for turkeys. The Supremes are copper plated lead and they have some other shells that aren't Hevi-Shot but they are similar. I saw them advertised at BPS for $18 per box. I just bought a super full choke (.665) for my barrel (Rem-Choke type). Haven't had a chance to pattern these yet, but again my options are limited. Hope this helps!