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View thread Contact supportI have been very curious to hear from people reloading it.I’ve been reloading AAC brass for my .223 AI for a while now and haven’t any issues with brass(most has 4-5 uses). The two ruptures with the 77 OTM, we’re the first issues I’ve had.
I don't think its over pressure, just (supposedly) rare weak brass.I really want to grab a few hundred to run out of a 10.3" barrel. Are people seeing these pressure issues in shorter guns?
Recently bought?Well-ES is off the charts with this stuff although for a semi at 100 yards it really didn't affect grouping other than fliers. Two guns, both 18" gas. 1st is unsuppressed, 2nd suppressed, different gun
Garmin, both at 7-8" from muzzle/suppresser end.
75 BTHP-91.5
75 BTHP-113.8
77 OTM-146.6
77 OTM-85.7
77 SMK-158.5
77 SMK-48.4/SD was 17.2 on this
My 77 TMK from suppressed was 54/ES/SD 15.3
unsuppressed was 62.6/20.3
I have a box left of each and may shoot again with the suppressor off to see if mattered, though that was odd ref the 77 grainers?
Kind of what I expected for the price--oh, one of the 77 SMK would not chamber in the DD MK12, the shoulder is "crushed" not from the gun, it was the first round chambered from bolt lock. Had to mortar it, like 3x hard, it was tight!
Weird, the 77 OTM I shoot is consistently sub 17 SD. Thursday my data from a new 12.5" Blackstone Arms midlength barrel was AV: 2634 / ES: 49 / SD: 16.1.Well-ES is off the charts with this stuff although for a semi at 100 yards it really didn't affect grouping other than fliers. Two guns, both 18" gas. 1st is unsuppressed, 2nd suppressed, different gun
Garmin, both at 7-8" from muzzle/suppresser end.
75 BTHP-91.5
75 BTHP-113.8
77 OTM-146.6
77 OTM-85.7
77 SMK-158.5
77 SMK-48.4/SD was 17.2 on this
My 77 TMK from suppressed was 54/ES/SD 15.3
unsuppressed was 62.6/20.3
I have a box left of each and may shoot again with the suppressor off to see if mattered, though that was odd ref the 77 grainers?
Kind of what I expected for the price--oh, one of the 77 SMK would not chamber in the DD MK12, the shoulder is "crushed" not from the gun, it was the first round chambered from bolt lock. Had to mortar it, like 3x hard, it was tight!
I'm not an expert, but an out of battery hang fire seems odd.First time running the 5.56 77g OTM today. After shooting two rounds, I pulled the trigger and "click", boom. I looked and the bolt was not fully in battery. Dropped mag and then attempted to rack the charging handle and the round was stuck. Had to mortar it out. Not impressedProbs 500 rounds of x-tac on this build so far and that was my first failure of any kind. Anyone else?
Technically not a hang fire. There was no strike on the primer. The firing pin cant protrude through the bolt until the bolt is fully in battery. I technically could have hit the forward assist haha. I looked at the round and the bullet was so out of axis from the case that I think it just bound up/jammed before fully chambering. The rest of the 19 rounds in the box ran fine.I'm not an expert, but an out of battery hang fire seems odd.
Or was it not a hang fire?
That makes it sound like the round fired, but then you say it didn’t strike the primer…?I pulled the trigger and "click", boom.
Yeah my bad I just read that and its super confusing. No boom, round did not go off. I meant to say "click" and no boom.That makes it sound like the round fired, but then you say it didn’t strike the primer…?
That pretty much mirrors what I got with the AAC 77 OTM’s that I purchased in June. Shoots ok out to 300 but falls apart pretty quick past that. Out of a Noveske with 18” Douglas barrel.Well-ES is off the charts with this stuff although for a semi at 100 yards it really didn't affect grouping other than fliers. Two guns, both 18" gas. 1st is unsuppressed, 2nd suppressed, different gun
Garmin, both at 7-8" from muzzle/suppresser end.
edit--10 shots each
75 BTHP-91.5
75 BTHP-113.8
77 OTM-146.6
77 OTM-85.7
77 SMK-158.5
77 SMK-48.4/SD was 17.2 on this
My 77 TMK from suppressed was 54/ES/SD 15.3
unsuppressed was 62.6/20.3
I have a box left of each and may shoot again with the suppressor off to see if mattered, though that was odd ref the 77 grainers?
Kind of what I expected for the price--oh, one of the 77 SMK would not chamber in the DD MK12, the shoulder is "crushed" not from the gun, it was the first round chambered from bolt lock. Had to mortar it, like 3x hard, it was tight!
That's about the same std dev I got on the last box of 6 ARC 103 ELDX's I shot. Happens from time to time I guess.That pretty much mirrors what I got with the AAC 77 OTM’s that I purchased in June. Shoots ok out to 300 but falls apart pretty quick past that. Out of a Noveske with 18” Douglas barrel.
View attachment 8465171View attachment 8465172
So Hornady and Sierra are officially manufacturing everything other than the handgun projectiles
Lol, why are people still buying this ammo?They did state that previously.
Who the hell could analyze anything from that video?
Btw, here's a 5.56 77TMK that wouldn't chamber yesterday. (On the left)
Maybe it's my chamber
View attachment 8465778
They did state that previously.
Who the hell could analyze anything from that video?
Btw, here's a 5.56 77TMK that wouldn't chamber yesterday. (On the left)
Maybe it's my chamber
View attachment 8465778
To be fair, I have posted 2 of the split cases and that TMK round.Lol, why are people still buying this ammo?
Everytime I jump in one of these threads, it's always the same. People having problematic ammo and AAC fails to address the issues. It's mostly ruptured cases where the end user contacts AAC about it and they usually don't reply. This is happening also on 6.5 ammo. I've also seen extreme spreads way over 100fps. So your problem is just another one to add to the list. Why are people still buying it?
Lol, why are people still buying this ammo?
Everytime I jump in one of these threads, it's always the same. People having problematic ammo and AAC fails to address the issues. It's mostly ruptured cases where the end user contacts AAC about it and they usually don't reply. This is happening also on 6.5 ammo. I've also seen extreme spreads way over 100fps. So your problem is just another one to add to the list. Why are people still buying it?
That’s simple it’s cheap
I can’t blame you there did that for my XM3 bought 200rds of Norma for the brass.If it's because it's cheap, I would rather just go norma and get the brass.
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That TMK was the first of any AAC round that wouldn't chamber.Sounds like I’m one of three different guys who have had rounds fail to chamber because the bullet was cocked/out of axis with the case. Did y’all’s failures require you to mortar it out?
Also what are peoples thoughts on the Sellier and Bellot 77g 5.56? A thread on here a whole back gave it praise.