Stan, realizing that you have a streak of McGyver/DIY, Rocky Mountain Cartridge sells minimum orders of 20 brass shells ranging in .25" increases of length, 2" to 3" from $85 to $94. They have machined primer pockets for shotgun primers. They are precision made, one at a time, to .410 specs. Gil
I'm afraid I also have a tetch of frugality in me, that makes me want to do "unnecessary things" on the cheap. If I go down this rabbit hole I'm going to want to go for having at least 100 cases to load. That's the reasoning behind me looking so hard at the Prvi brand ........... low price. I don't mind spending for the best brass (Lapua, IMO) for some of my rifles, but for a shotgun I figure cheap brass should do. My concern about other brands is that the rim thicknesses on all of them may not be the same, and one might work without thinning whereas another may not.
I have contacted PPU (Prvi USA) about sending me one case to try. They may not, but I figure it's worth a try.
Thanks, Gil.
