Most people don’t shoot enough HP to really find problems you don’t get with ball ammo. I know it’s never happened with 1911’s... I also know a local department that had a few fail to feed in testing the Kahr for BUG approval. But only one brand of 147gr and after several hundred rounds of testing.
Same kind of thing happened with Glock .40 cal with weapon lights malfunctions. It’s rare enough for many to discount it.
I do hope Glock improved their ban mags with the Gen5. Or courts tell ban States to F off with mag bans.
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