Most Glock kabooms in 40 seem to fail the same way. Case blows out on head, downward. I know the Glock 45s do this as well. Is this a function of weak case walls + the unsupported chamber?
.40 cal glocks do it all the time. IMHO its because the chamber is loose as **** on a Glock but it is worse in .40 S+W than any other chambering because .40 S&W has no headroom at all for pressure excursions.
If I was going to place a wager, 180gr bullets, probably reloads, possibly bullet setback, etc. It probably doesn't take much to get a full blown KB in a Glock .40. I briefly owned a G22 and had no issues, but boy did that gun **** up the
brass coming out of it. Pretty easy to see the 6oclock bulge with the right kind of light.
Yeah, the .45s blow up once in awhile too but I bet the difference in rate is enormous. Also, most of the .45 glock KBs that I've seen were either due to self-admitted overloads or otherwise simply defective ammunition. I've seen pics and reports of blown up glocks in every chambering; but the .40s are by far the worst in terms of the numbers. No other caliber comes close in KB rate on a Glock handgun. I would bet that conservatively 85% of Glock KBs are confined to G22, G23, and G27 pistols. The 35s and the 24s probably don't blow up at the same rate because a lot of competition types use those two and 65% of them run weaksauce barely above major PF reloads through theirs.
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