COB, those .410s can be a bugger, especially when one loads Rem, Win and Fiocchi hulls. I use a lot of overshot cards. I'll use them for most of my shells, .410, 28, 20, 16 and 10. Don't need them for 90% of my 12g 2 1/2" shells. For some reason my 12g crimps are usually right on the money. I also use them for my 12g Black Powder paper shells. Really finishes off that crimp.
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