.40 Glock bulge on a .380?
- Thread starter fouled bore
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bocefus78
Member
Definitely a glock firing pin strike on that 380.
Fwiw, my glock 23 Gen 3 doesn't bulge them nearly as bad as that pic. Maybe it is the pic exaggerating it.
Fwiw, my glock 23 Gen 3 doesn't bulge them nearly as bad as that pic. Maybe it is the pic exaggerating it.
lauderdale
Member
It don't look like the typical glock bulge to me?
fouled bore
Member
I am not going to reload them, they will be in the scrap with the .40 Glock brass. I just thought this was strange because I had only seen .40 with the bulge. I thought that only Glock .40s had the unsupported chambers.
Firing a .380 in a 9mm does not result in a bulged case. Worst case (and common) scenario is that the gun does not cycle.
Toprudder
Member
I've picked up some 380 range brass (not mine) that had the glock bulge. I have yet to figure out what gun causes that, but I have been suspecting the G42, since I have not seen this on any 380 brass until after the G42 came out.
fouled bore
Member
I am starting to think it may have been some custom feed ramp work? Any way, it is really pushing the limit, there is one in the batch that is really bulged quite a lot. I am surprised at the amount of bulge and wondering how much more it would take to blow it out.
Toprudder
Member
You might be right, the ones you have pictured have a much more pronounced bulge than anything I have seen. They look like they were very close to failure.
lauderdale
Member
OK il fess up I put a 9mm rnd. in my G.40 gen 4 mod 23 thinking my conversion barell was in. After testing hundreds of 9mm rnds. prior it was and could have turned out really bad. Hit low left of poa the brass didn't eject and when I got it out it looked exactly like that brass. I cant figure on two diff. calibers in the pic thou? Don't beat me up to bad please.
243winxb
Member
When feed ramps are over "polished" on a 45 acp , this same bugle may appear. Unsupported brass expands.
fouled bore
Member
I put the .40 brass there just for the comparison.
fouled bore
Member
Lauderdale, I can't even imagine it making a primer strike. I would think it would be to far off center or slid too far up the barel.
Toprudder
Member
What happens is the round headspaces on the extractor, not the case mouth. On most semi-auto handguns, the case rim slides up under the extractor as the round is being chambered. Even though the head is a slightly different diameter between a 40 and a 9, they use the same shellholder, so they are close enough.
Toprudder
Member
lauderdale
Member
Im trying to think how the scenario plated out as the second 40 case looks like it has the same issue? correct? I can see someone possibly doing what I did but then again a second time and in what caliber gun? But polish job in two caliber guns would sound more wright if that's the issue? am i making any sense?
fouled bore
Member
The .40s I picked up a few months earlier.
bfalcon00
Member
Yeah I've started to see that too on 380 cases at the range. Started right about the time that new glock started showing up.
lauderdale
Member
That would make sense then. Thanks
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