That is odd. I have not met a Glock yet that wouldn't run with SWC bullets, although I have seen a very similar issue to what you describe in the XD with the top mounted extractor. You're the first I've heard with first hand experience of that in a Glock, everyone else seems to be repeating what they heard from someone else.
i just saw this. And me having fired a bunch of those swc keith H&G68 style bullets in a springfield XD. Never a problem.
I should add the one problem i did have was in a sig220. Adjusting the O.A.L. solved that issue too.
