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Old 09-04-2021, 09:44 AM
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yeti yeti is offline
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Glock improved the unsupported issues a few generations back.

My understanding is that this was mostly a Gen 1 factory Glock barrel issue. Seemed to be exacerbated by new brass supplies (mostly Speer at the time) that had a thinner case area. Brass cases have been thickened and Glock provided for increased bbl support. Gen 2 bbls were improved, most factory loads showed no issues. Some fired brass would exhibit the "Glock smile" in Gen 2 bbls with hotter loads only.

If fired cases are from older 80's-90's Gen1 G22/G23 or maybe Gen2, roll size or use a GR-X.
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