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Old 09-04-2021, 02:04 PM
Maurice H Maurice H is offline
Join Date: Jun 2019
Posts: 52
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40 S&W and 10mm are known for their bulged brass. Badly bulged ('guppy belly') gets tossed, medium bulge for softer/medium reloads, no bulge for any reload. My LE Wilson case gauge is indispensable.

The standard 'busting' procedure is to run them through a pass-through die (e.g. Redding G-Rx) before sizing. Aftermarket bbls are often used to replace OEM Glock bbls to minimize bulging - KKM for me.
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