How does this happen?


November 29, 2010, 08:23 PM
The other day I was scavenging cases from my range and I found this 9mm when I was separating them at home. Is this what maybe happens when someone shoots a 9mm in say a 40 S&W gun? I couldn't think of any other scenario that could cause this. If I'm right there is some really goofy people out there.:eek:

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November 29, 2010, 08:33 PM
I found a bunch of them one time.

Wonder what kinds of groups the guy got, or if any of them even hit the target?

November 29, 2010, 09:17 PM
That's exactly what it is. There are several threads about these issues, and the people who do them........

Hope this helps.


November 29, 2010, 09:29 PM
Found something similar with a .40 S&W case, as it looked similar to those pictured only it had splits too. Must have been fired from a .45 acp pistol. LM

November 29, 2010, 11:52 PM
Say, you might not want to reload those!


November 30, 2010, 11:09 AM
Be a little difficult to fit in the resizer die.:eek:

November 30, 2010, 12:36 PM
Be careful.....They walk among us.

November 30, 2010, 01:58 PM
As long as they walk ahead of me ....

November 30, 2010, 04:50 PM
"...there is some really goofy people out there."

Yep. Loads of 'em. Proofs; your case pick ups and our president.

November 30, 2010, 06:06 PM
Two things: First, I wonder what the target looked like. Second, well, take your pick, but it proves once again that Angels look after fools.

November 30, 2010, 06:12 PM
I have seen the same thing. Thanks for starting this thread. Now I know what causes it.

November 30, 2010, 06:30 PM
Ugh, so gangbangers really CAN shoot nines in their fo-tay's?

November 30, 2010, 06:50 PM
True story: The last time I was at the range waiting in line to register a young guy and his friend in front of me asked the man behind the counter if he could use 9mm ammo in his friends 10mm Glock because it was cheaper and they were only 1mm apart in size:eek: We are in trouble guys. Big trouble!

November 30, 2010, 08:12 PM
Stupid people are aloud to breathe.

November 30, 2010, 08:42 PM
And breed.

November 30, 2010, 10:30 PM

I had that same profile the day after Thanksgiving. :D

November 30, 2010, 10:43 PM
"Gee, this darn 9mm is total rubbish, just no accuracy there."

LOL, I'll bet the guy will be giving himself multiple forehead slaps when it finally dawns on him, that in fact the gun isn't a 9mm. ;)

November 30, 2010, 11:56 PM
Accuracy can only be 'casual'.

There's not too much danger of blowing up a pistol that way. Pressure cannot build up very much. I'm rather surprised the action operates.

Still not recommended procedure.

December 1, 2010, 01:52 AM
The problem lies in over expanding the case, to the point of case rupture. I've found .40 S&W cases that were obviously fired on .45 acp chambers that have ruptured, due to being stretched beyond the ability of the brass. When this happens, the gas escapes to the rear, endangering the eyes of the shooter, and sometimes blowing off extractors, etc. It's happened at our range within the last couple of years.

Sometimes you'll also find .380 Auto cases that were fired in 9x19 chambers, .22 Long Rifle cases that were fired in .22 Magnum chambers, etc.

If it can be done, someone will do it............

Hope this helps.


December 1, 2010, 10:27 AM
Spend much time at a public gun range and that wouldn't shock you. I have even seen 264 win mag shot from 300 weatherby. That was a strange looking case.

December 1, 2010, 11:02 AM
And .270 Winchester rounds fired in .30-06 chambers. The mouth of the longer cartridge will be folded as if crimped, since the .270 case is based on the longer .30-03 case.

There are many, many combinations. I've also seen a very experienced shooter fire 357 Sig rounds through a .40 S&W, since both guns were Glocks and he had both on the bench at the same time. He grabbed the wrong magazine and put it into the gun and fired several rounds before he realized what he had done. Mistakes can, and do, happen.

Hope this helps.


December 1, 2010, 11:06 AM
Mistakes can, and do, happen.

Hope this helps.

FredPointing out that mistakes happen? No. it does not help. ;)

December 1, 2010, 11:47 AM
I"ll make that guy a hell of an offer on his "unaccurate" .40.....

December 1, 2010, 01:05 PM
God help the poor soul that makes the mistake of droppin a 20 gauge shell into a 12 gauge shotgun, and doesn't realize it before he jacks in a 12 gauge shell.

A and O
December 1, 2010, 01:53 PM
This is why I tend to go shooting where nobody else is around. I call it self preservation.

December 1, 2010, 05:24 PM
Last time I went to the range this guy shooting was telling my buddy how he has been shooting since he was a kid and so on, he was probably 40ish. He shot three mag's and had to cycle the slide after every round. I finally picked one up out of the dirt and looked at it and told him, looks like your shooting 9mm in a 40. He said yea like he knew and it was on purpose. :banghead:

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