Federal Primer pockets, yes I got given a load of once fired brass for the 223 ( Im a bit of a squirrel for brass). Repriming the federal, excessive resistance was experienced, remove the case and it looks like the pocket has been shimmed? with copper and was off centre. Look at all the others they are the same so I bin the lot.
Having said the the factory ammunition is pretty good but I agree the brass is only designed for one trip.
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