10 Gauge, 2-5/8" Brass....

[Paul Harm]

If you use the shells in the same gun they won't need resizing. I've found that shells shot from a semi-auto are about the only ones needing to be resized. I believe it's because they come out of the gun so fast. I shoot about 10 different SxS's and don't resize. Paul

[Roundsworth]

Are the RMC brass cases of the 'balloon head' configuration, or do they have an inside base shaped like a modern plastic hull with a base wad?