I dont need one, but just curious.
Lee used to make a 12g classic loader, pretty simple. I have one, or most of it.
Has there ever been available a kit to load shotgun cases on a std 7/8" single stage press?
I guess it would only require,
1. Case holder
2. Priming tool
3. Powder Scoops
4. Lead shot scoops
5. Crimping attachments.
6. Re-sizer.