Doc:
I believe it was Sinclair International that made something called "a baby crockagator". It is a piece of ss rod, turned down to large and small primer pocket diameters. The ends are checkered, and when turned by hand, do a fine job of cleaning rifle primer pockets. I almost never clean handgun cartridge primer pockets, Does not seem to be all that much build-up. As for cleaning the flash hole, never tried it.
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