AR-15 KB with HSM ammo

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George Hill

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No one was injured.
HSM ammo. New Armalite AR-15.
We've had a lot of problems with HSM ammo lately. We didn't used to, but now all the sudden it's been a nightmare. Stuck cases, dud primers, and now a KB.
Now it could be the gun's fault... like the bolt didn't fully lock. But that wouldn't explain the blown out primer pocket. I think this was an ammo issue and not the gun's fault.
I've only seen the bolt carrier torn up like that on bad handload KB's... like double charged or wrong powder for the load.
 
George,

Have you contacted them-- or will you?


I'd be curious to see what they say.


And I am glad no one was hurt.


-- John
 
This and the Police AR that was blown up with HSM ammo (there was a news link posted a couple months ago) make me glad that I didn't choose their brand when I stocked up. I know every brand is capable of putting out bad ammo, but this seems like an undue number of HSM problems.

On ARFCOM, it says a Glock .40 was recently blown up with HSM ammo as well.
http://www.ar15.com/forums/topic.html?b=1&f=5&t=690490&page=1

There was also a very interesting review on HSM ammo in JAN in the ARFCOM ammo review forum:


http://www.ar15.com/forums/topic.html?b=3&f=16&t=357666
HSM 55gr. FMJ .223

Fired from an Armalite M15A4 with a USGI mag and a PMAG

out of 30 rounds I had the following malfunctions:

- 4 Failure to extract
-4 Failure to feed
-1 FTE was a combination with a Failure to Fire.
-1 other Failure to Fire in a Bushmaster AR

What seemed to be happening to me was that the cases would expand down at the bottom and this would lodge it into the chamber. There was a visible black ring on the case where it had been wedged against the chamber.

Failures to feed were results of dented cases and out of spec (swollen lower half) cases.

The FTE/FTF was a swollen case that actually did feed, but didn't fire due to a bad primer and wouldn't eject due to both the swollen case and the flange on the back of the case was broken. The fail to fire in the Bushmaster was also caused by a bad primer.

I will never buy this ammo again as the swelling cases after firing show that they are weak and in my opinion vulnerable to exploding.

Quality throughout the 100 rounds I bought was mediocre at best, we hand sorted all the rounds to find the "good" ones (no dents, swelling, broken extraction flanges) and still had malfunctions. The sorting was done after the first two malfunctions. probably half of the rounds were in "good" condition.

ETA: Before this my Armalite has eaten multiple kinds of ammo and over 1000 rounds so far with not even a hiccup...even wolf ammo fed flawlessly.
(highlighting and emphasis mine)
 
The description of 'swelling cases' makes me think a batch of brass got over-annealed and the case head was softened. That would certainly weaken it to the point of kaboom, especially if something was overcharged.
 
DOUBLE CARP!! I've had great luck with their pistol ammo but I think I'm not gonna touch their 223 stuff for the time being .
 
Wow, I have 350 rounds of HSM .223 (marked “Police Ammunition”) and 100 rounds of their 9mm stuff in my safe. I've already been through 100 rounds of the .223 in my Mini 14 and another 50 in my Bushmaster with no issues. I don't have access to a chrono or ballistic gel but I did notice the HSM seems to have a shaper recoil and a louder report than most of the other .223 I've shot, it feels more like the WWB 5.56 NATO I've tried.

I haven't yet used any of the HSM 9mm I bought.

Maybe this has just become my Ruger only ammo...
 
By the way, George, I'm assuming that the upper was not visibly damaged and that's why you included only a photo of the fubar bolt/carrier...

But I'm still interested in a photo of the inside of the upper (from the bottom, if possible) if it's something that's easily done...

Thanks,

Forrest
 
I know it is an old saw, but if you handload you can prevent such occurrances. Some folks seem to think that factory ammo is inherently safer, and more reliable. It isn't.

My $.02.
 
It's not factory ammo.

It's reloaded brass.

This is why I never, ever, even if it was given to me, even if they paid me to use it, use A-Merc or UltraMax or HSM or any of a number of other "reloads companies."

For me, it's like going to a gas station with $2.25 gas, but it may or may not contain the following: nitroglycerin, hydrazine, water, dirt, or tar.
 
HSM stands for what people say when they see you blow up your gun.

Holy s--- man!!!!


WEG almost owed me a keyboard. I gotta remember that one.

Nice WEG. Thanks for a morning chuckle before the tornados carry me and the pups off to Oz.


-- John
 
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