I have been mainly shooting 10mm glocks for the last few years. All my "heavy" ammo does this...never had a problem as a result, unless you count "not having as much brass afterwards" as a problem. Which I guess I do, but anyway...
While many of my friends tell me to get a barrel with a supported chamber, I keep the factory one for the following reason: I can always run lighter loads for practice, which I generally do anyway, although not TOO light...still as hot as a hot .40. But my heavy weight ammo is mainly for emergency use, at which point I want the factory Glock barrel with its shallow, brass-killing feedramp, because I want those ****ers to feed!
Full disclosure: I'm the editor of Calibre Magazine, which is Canada's gun magazine. In the past I've done consulting work for different manufacturers and OEM suppliers, but not currently. M4C's disclosure policy doesn't seem to cover me but we do have advertisers, although I don't handle that side of things and in general I do not know who is paying us at any given time.
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