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.