Jimmy:
Don't fear the ammo issue. Its simple to solve.
You have a press. Just trim once fired 2 3/4" hulls down to 2 9/16", use an appropriate lower pressure recipe for a 2 3/4" straight wall hull, and add a 20 ga. shot card on top of the shot column before you start to fold crimp. Then load as normal on your press. No adjustments needed to your press. It is that simple.
I'm guessing your best bet is using 20/28, Unique or Green Dot. Longshot is another option.
If you need a cutter, let me know. I can show you how to make one with an exacto blade in a wood dowel that zips right through hulls. Russ
