Funny thing.
Those glocks I saw go pop were 9mm
Most Glock ka-boom’s I’ve seen resulted from using cast lead bullets in reloads. There have been some verified instances of factory loads causing failure in the .40, .45 and 10mm Glocks, but they’re rare and usually lead was shot down the same bore prior to the factory jacket loads causing problems.
I’ve seen documented ka-booms in Springfield XD’s, HK USP’s and other pistols using the “polygonal rifling” and cast lead pills.
Personally, I believe that there is an issue with polygonal barrels, their tolerances and leading. The problem in constructing a test for this is that when one says “cast lead bullet,” we first have to discuss the exact composition of the casting lead. There are all manner of alloys used in casting lead bullets, and they all behave slightly differently in casting or swaging, how much they lead the bore, etc.
Then we have to get into bullet coatings and lubes on cast lead.
The result is that there’s no hard, reliable data that can prove beyond doubt that “cast lead causes ka-booms” in poly barrels, because we have to start saying “Well, if you use this alloy, you’re OK, and if you use that lube, you’re OK, and if you use this lead remover, there’s no problems... “
I’d say that the data is very suggestive tho, and I don’t shoot anything other than copper jacketed pills in Glocks or other poly barrels. On this point, the 1911 has an edge, I believe.
Still, you can disassemble a 1911 very quickly with a double-charge. Double charges are rare, but they do happen, and the .45 ACP case allows for hefty over-charging with fast powders. Using the proper powder selection, it is impossible to double-charge a 9x19 case. NB the caveat - with the proper powder selection.
And, BTW, for those who might think that I’m bashing the 1911 or Glocks, I wouldn’t own them all if I didn’t like them. I own and shoot them all. Never had a ka-boom in anything. But I’ve seen ka-booms, been on the range at the time ka-booms happened in another lane, etc.