Deltaboy:

Previously, I've shot flats of the Polywad Vintagers(if that's the shotshell you are referring to) without any problems. But one of the last flats of no. 12 bore 2 1/2" 24g #6s had several cartridges that had an issue/indention near the crimp. But a Leech & Sons boxlock & a Lindner Daly, both which I shot, as well as a Model 1900 Remington with ejectors digested them fine with the exception of 1 cartridge that the shot just made it out the end of the 30" tubes.

Kind Regards,

Raimey
rse