A simple chamfer/deburr hand tool works well for this sort of thing every time I've tried it... but then again, I don't know what a "police frangible, Federal .40S&W" case looks like. I use mine for milsurp crimps and it works.
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Attention Brass rats and other reloaders: I really need .327 Federal Magnum brass, no lot size too small. Tell me what caliber you need and I'll see what I have to swap. PM me and we'll discuss.
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