[Double Tap]

Please, stop passing these myths off as fact. An unsupported chamber will not cause a Kb. It might cause a case failure if the ammo is loaded too hot.

Glock has not made any design changes to the barrels of the 40's or 45's. They did make a locking lug change to the G19 barrel because of problems NYC was having with reliability. But not because of Kb's.

[hiredhand]

I'm NOT a Glock fan, and for no real reason to be honest with you. HOWEVER....

I went to a shop to buy some supplies during lunch one day, and a guy was bringing his .40S&W Glock in to have it repaired. We all got a good look at it. The guy was shooting "boxed" Federal ammo (NOT reloads), and from all appearances, the case head BLEW right above the feed ramp.

So, the bottom of the head failed (if you were holding the weapon to fire it). It made a real mess out of the pistol, and we all exchanged glances and were happy that we owned either Kimber or Colt .45ACPs. :-) The guy who worked there said they had see more than this one which had failed in this manner.

[ghostcat]

These are not myths, these are facts. Any time you have a case failure you run the risk of a catastrophic failure to the gun. At the very least the gases venting into the frame will usually damage the ejector and blow the magazine out the magazine well, damage will also usually occur in the trigger Assembly. This can and does happen to many makes if the case is not supported correctly. When you are dealing with pressures of 20,000 psi(standard 45 acp is around 21,000 psi) or higher amazing amounts of damage can be done.
As for design changes in the glock, all you need to do is look at the chamber end of the earlier glock .45 barrel and compare it to a current manufacture .45 barrel, you will find that the case is much better supported in the current barrel. Now that may constitute a design change in your mind, but it most definitely does in mine.

[MarkL]

Please, stop passing these myths off as fact. An unsupported chamber will not cause a Kb. It might cause a case failure if the ammo is loaded too hot.

And the only time I've ever seen a case failure was in a 1911 with a double charge of 231. The barrel was stock (not ramped, so the base of the case was unsupported), and the results were a slightly burned and bruised off-hand, where the magazine was blown downward, out of the pistol.

Mark