View Full Version : USP 45 after double charge (pics)

06-20-2005, 5:31 PM




06-20-2005, 5:40 PM
http://calguns.net/groupee_common/emoticons/icon_eek.gif Christ I hope no one was injured.

06-20-2005, 7:21 PM
Was this your personal firearm????

Wow, I agree with Ducati, I hope no one was hurt.

06-20-2005, 9:55 PM
And the MK23 was tested with a double charge proof load, I think, during the pistol trials. I wonder if the same thing could or would happen to a MK23.


06-20-2005, 11:00 PM
The mag must've launched out of that thing like a rocket. Yikes! http://calguns.net/groupee_common/emoticons/icon_eek.gif

Any metal come off the slide too?

06-21-2005, 8:30 AM
is this the same USP with the O ring match barrel and Expert trigger from an earlier post?

Mike Searson
06-21-2005, 7:04 PM
That's not from a double charge.

That's a reload with a bad case.

When brass fired from unsupported chambers is constantly resized, you'll notice a ring around the case.

If you shoot 40 S&W out of a Glock, USP, or any unsupported bbl you'll notice a telltale bulge in the empty cases. As this is resized time and again it makes the structure of the case weaker.

Sooner or later the case goes at that point and the charge decides that's the path of least resistance and it goes that way instead of down range... then the gun goes bad like this one did.

There's a number of other factors involved...enough that I won't willfully shoot a 40 caliber Glock or USP.

Although I have seen this in 1 45 ACP and 1 9mm incident, the overwhelming majority that I've witnessed has been 40 S&W using a mid to fast burning powder.

06-21-2005, 7:27 PM
That is a .45, so the "myth" of the unsupported chamber does not apply here.

Mike Searson
06-21-2005, 10:41 PM
This gun may have had a supported chamber, but so what.

I'm betting the brass that went into it was resized too many times and was fired from guns without a supported chamber.

Catastrophic failure at the ***-end of that case points that out.

06-21-2005, 10:59 PM

What would a double charge do?

Not blow out the back of the case?

06-22-2005, 7:22 AM
Originally posted by problemchild:

What would a double charge do?

Not blow out the back of the case?

So you never did tell us, was that your USP?? The one in the pic has the expert trigger -- just as yours does in the other thread!! Same gun!?!?


06-22-2005, 8:57 AM
same gun next weekend

06-22-2005, 9:18 AM
Holy cow, what a shame!!

Sorry to hear it - let us know if you are able to get any repairs or replacements from HK, although understandably it is not their fault. Curious what costs are involved.

You weren't hurt, I presume, in the blast?


06-22-2005, 3:09 PM
Was this your reload?

06-22-2005, 8:13 PM
Hk said 130.00 for new frame.
5 weeks to do it.

06-23-2005, 8:19 AM
Originally posted by tooTactical:
Once again, HK Customer Service proves it's a ripoff. $5 worth of epoxy and she'll be good as new. http://calguns.net/groupee_common/emoticons/icon_biggrin.gif

What, does no one believe in duct tape anymore?? http://calguns.net/groupee_common/emoticons/icon_smile.gif


06-23-2005, 8:39 AM
Originally posted by problemchild:
Hk said 130.00 for new frame.
5 weeks to do it.

Plastic is cheap, be glad you weren't hurt. Imagine if that happened to a P7, a new frame would probably cost as much as the gun http://calguns.net/groupee_common/emoticons/icon_eek.gif

06-23-2005, 9:27 AM
$130 for a frame..

I would have expected it to
be more...

Love my USP45F!

06-23-2005, 10:02 AM
Ok I took everyones advice and gaffer taped it up. Works great on low charge loads.

Scared to try +p+ though....

06-23-2005, 1:31 PM
Oh please tell me you're only joking... http://calguns.net/groupee_common/emoticons/icon_eek.gif


06-23-2005, 2:59 PM
I went from being a bit bummed while looking at this thread to LMAO now with the tape.

Hopefully your fingers can be taped back on too if something goes awry.

http://calguns.net/groupee_common/emoticons/icon_eek.gif http://calguns.net/groupee_common/emoticons/icon_frown.gif http://calguns.net/groupee_common/emoticons/icon_redface.gif http://www.calguns.net/laughroll.gif

06-23-2005, 4:41 PM
that there best be military grade duck-tape http://calguns.net/groupee_common/emoticons/icon_wink.gif
how's 'bout sum jb weld? http://www.calguns.net/cowboy.gif

06-26-2005, 5:58 AM
With the S&W500 is this two wrecked guns? http://calguns.net/groupee_common/emoticons/icon_eek.gif

07-07-2005, 6:04 AM
I don't understand why so many people don't take the warning given by Hk NOT TO SHOOT RELOADS!!!!!!

My department allows the use of the +P 230gr "Ranger" load. I've shot about 2,000 rounds of that +P bullet and have suffered no damage or hicups........

Hk says the gun is chambered for +P and +P+, but not reloads! Some people think that warning doesn't pertain to themselves, I'm afraid.

I'm sorry to hear about your weapon, but you were warned when you bought the gun. At least you should have read your owner's manual.

07-11-2005, 9:54 PM
here's an mk23:


07-11-2005, 10:54 PM
I have a HK USP40 and love it.

But I won't fire reloads.

40S&W has very high chamber pressures to start out with. Now take a case that's been 'range brass' 4 or 5 times (or worse...), and resized each time - prob some work hardening too.

Now, also add that due to case being fired a lot there might be a tight fit in chamber, perhaps a little lube in the chamber as well.

And then the bullet is not quite positioned right in case - setback a bit too low in case. Maybe poor crimp, who knows. All of a sudden with all these things combined on top of weak brass, peak pressure spikes quite a bit above safe maximum and blows out unsupported area.

Apparently some PDs do 'administrative' load/unload of magazines during shift changes. Bullets go in the bucket then come back out and were loaded into a mag. Next shift, dump out, then someone else reloads from the ammo bucket.

Some of these bullets, over time and multiple loading/unloading, may eventually have a minor bullet setback within case. And as I understand it, even 0.05" setback in 40S&W can bring pressures up into the 70+K PSI area which is "double plus un-good".

Bill Wiese
San Jose