Bad ammo day at the range today.

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stompah

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I have a Glock 29. Picked up some Double Tap 10mm which only keyholes. Money down the drain.

More disturbing is some Hornady 180gr XTP, which I purchased about a month ago. I load up five rounds alternating with the DT for an ammo comparison. Then I fire off another 5 since I always carry Hornady. I look down on the bench and there are two 10mm cases. Both Hornady but one with a nasty split. I cull those two cases and figure must have been a weak piece of brass. Snapped a picture and counted my fingers.

Then as I am packing my gear away I start to sweep up my ammo for reloading. I find another three ruptured cases. One case is nearly split from case mouth to head!

So if you use Hornady for carry in your sidearm I would highly suggest testing to make sure your ammo doesn't have the same issue. My lot # is 3141912

First case I found:

RvJzCTF.jpg

Then a picture of all 3 cases:

1eraizQ.jpg
 
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I dont have a number for them so I filled out there contact us on their website.

This is the first time that I have had a factory new case in 10mm split like that. I am a little pissed because it happened in my G29 which has 40 rounds through it. I havent scrubbed the chamber but there is a nice stripe from that last one that scrubbing with a paper towel didnt remove (almost everything else in the chamber was removed. I will clean it properly tomorrow. I hope I dont have any lasting damage on an nearly new gun.
 
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It’s not 10mm, but a few weeks ago I bought a bag of 100 357mag once fired range pick-up. It included 6 Hornady cases all of which were maybe a 32nd of an inch shorter than standard 357 cases. I also have a box of factory Hornady 44mag 225 grain FTX that the cases look a little shorter than standard.

Maybe Hornady is scrimping on the materials for the cases in their ammo.
 

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Notify Hornady.....

Id suggest notifying Hornady, www.Hornady.com .
Let them know the lot # or item code(check the boxes).
Hornady had a big safety notice last summer for the Critical Duty +P 135gr 9mm.
Hornady & the other major firms: Corbon, Remington, Federal, Buffalo Bore, Black Hills, etc need to know about the poor quality or problems.
 
I just went through a similar problem with Fiocchi hp 9mm ammo. I had a case of it I bought a year or so ago and gave a few boxes to a friend. I noticed his empties were almost all split from his Glock 19 when we were out shooting. I checked the ammo in the boxes and they were nearly all split about 1/3 inch down from the top of the case. I assume they had a brass/anealing problem and contacted them.
After about a month, and lots of emails and pic's of the boxes and ammo I sent to them, they finally replaced the ammo.....but didn't seem too concerned about the whole situation. They didn't have any more hp ammo and said they wouldn't have for several months but could replace it with fmj which I agreed to as there wasn't much choice. After a couple more weeks went by, it finally appeared. The cases on the new ammo seem to be bulged somewhat around the area where the bullets are seated, so I hope the brass is not stressed to the point where this will happen again.
I've seen the bulged thing before with no resulting bad consequences, so I have my fingers crossed.
 
The brass of the cases was too hard and crude and/or had internal tensions. Those Double Tap bullets are simply incompatible with the gun: it happens sometimes.
IMHO there's nothing wrong with the gun and its barrel and chamber.

Multiple case cracks happened to me once with a box of 9x21mm Geco 124gr FMJ-RN fired from my Walther P99 AS: 15 of 50 cases cracked in the same way yours did. The other two boxes of the same cartridge I fired that day at the range showed no problems at all. I purchased all of them the same day at the same gun shop. Things happen... Obviously nothing was wrong with the Walther.
Geco 9x21mm is probably the cartridge I've fired the most out of my Walther and SIG-Sauer and I experienced case cracks only with that box of 50.
 
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Well at this point I will be contacting both Hornady and Glock via phone tomorrow and see what will solve this issue.

If I have time I will dig up my micrometer (I haven't reloaded in over a year). Make some measurements. I also have used brass from my previous G29. I will dig some of that up for a comparison.
 
It’s not 10mm, but a few weeks ago I bought a bag of 100 357mag once fired range pick-up. It included 6 Hornady cases all of which were maybe a 32nd of an inch shorter than standard 357 cases. I also have a box of factory Hornady 44mag 225 grain FTX that the cases look a little shorter than standard.

Maybe Hornady is scrimping on the materials for the cases in their ammo.
Click to expand...

The short Hornady cases are from their Lever-Evolution ammo...

Well known issue...
 
Picked up some Double Tap 10mm which only keyholes.
Click to expand...

Both Hornady but one with a nasty split... I find another three ruptured cases. One case is nearly split from case mouth to head!
Click to expand...

I am a little pissed because it happened in my G29 which has 40 rounds through it.
Click to expand...

Your answer is here;

I would question a chamber if I had keyholes and ruptured cases.
Click to expand...

and here;

New gun? I'm thinking chamber, not ammo issue.
Click to expand...
 
You have some longitudinal cartridge case splits. It's no big deal. That's why Fiocchi wasn't worried about it when Stony contacted them about his ammo. I'm sure Hornady will replace the ammo for you just to make you feel good.

Brass cases have LOTS of internal stress locked in by the case forming process. Sometimes they'll split when they're fired.

There's nothing wrong with your gun or ammo.
 
Respectfully disagree. In well over 50 years of shooting the only times I've seen splits like that have been when rounds were fired in chambers that were oversize. This is simply not normal or routine.
 
Important factor OP left out: Did the DT cases stretch/ rupture too? or just the Hornady?

Unless another brand or two shot fine, i'd say the chamber is out of spec.
 
I see cases like that all the time; that is what happens to every single pistol case if you reload it enough times. It is rare I go through a shooting session without splitting one kind of like that... sort them out and keep rolling.

Case heads and primers are in good condition. There might be some problem with the gun or ammo, but, it doesn't look to me like an overpressure problem that is likely to blow up the gun.

The brass doesn't look way overly expanded either. Glocks are of course known for generous chambers. It could be that you have a chamber on the big side of the spec, a run of brass that is slightly more brittle than average, and a defensive "full power" loading = split case. If the splits are isolated to that one type of ammo I'd be more curious about the key holing honestly.
 
I see cases like that all the time;..... It is rare I go through a shooting session without splitting one kind of like that
Click to expand...

Are you serious? Or is that kind of a tongue in cheek type comment, especially the 2nd part?
 
I am not kidding at all... I shoot pistol cases till I lose them, or they split, which ever comes first. I split probably one per 200 rounds on average.
 
I called Glock. Their tech support guy didn't seem to interested. Told me I can send the gun back and he said he emailed me the info to ship it back. Its been 5 hours no email, even in my spam folder. The just sounded like he didn't care. Not a good employee to have.

Hornady was very helpful. They emailed me labels quickly and want the unfired ammo plus all of the cases I recovered.

The Double Tap keyholes and the cases were fine. The Hornady shot normal and cases split.
 
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