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Rodfac, I think most folks spend too much time trying to unifom the minute irregular details on cartridge cases. There are top level competitors who don't do any case prep at all and get the same accuracy as those to do everything possible to eliminate any difference between cases.
Sierra Bullets, for one, does no case prep at all on their cases used to test their stuff for accuracy. Their best match bullets to into 1/4 MOA or better at 200 yards with metered, not weighed, powder charges.
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