American Ammunition Company 77gr SMK HPBT

bfoosh006 · Thursday at 11:41 AM

As reported on AR15.com

Maybe this will help...

16" barrel...
"
FPS average for each Lot listed newest to oldest based on purchase date, but the lot numbers don’t proceed in perfect order (I guess they don’t line em in the warehouse exactly by lot #

).

Lot# /FPS/ SD/Month & rnds purchased

SCT3EB241 2449 18 April2025 (200)

SCT1DL091 2537 20 March 2025 (200)

SCL3EB201 2451 29.5 Feb 2025 (200)

SCL1EA302 2515 16 Dec 2024 (200)
————————————————————————————
SCL1DK141 2610 18.5 Nov 2024 (300)

SCL3DI171 2674 18.5 Sept 2024 (600)

SCL2DG231 2601 16 July 2024 (100)

yosemite_sam · 2025-05-11T12:36:41-0400

When people are saying it’s “too slow” what do you mean by that? Too little energy, poor wind performance, too much drop? Attached are two dope charts for my rifle(16 inch barrel). One has velocity at 2610(fast stuff) and the other is at 2488(the average of the velocities of the four new lots posted above). I have my own thoughts about the data but want to hear what y'all think?

Screen Shot 2025-05-11 at 12.30.05 PM.png

Screen Shot 2025-05-11 at 12.30.31 PM.png

TonyAngel · 2025-05-11T12:53:05-0400

yosemite_sam said:
When people are saying it’s “too slow” what do you mean by that? Too little energy, poor wind performance, too much drop? Attached are two dope charts for my rifle(16 inch barrel). One has velocity at 2610(fast stuff) and the other is at 2488(the average of the velocities of the four new lots posted above). I have my own thoughts about the data but want to hear what y'all think? View attachment 8684429 View attachment 8684430

I get what you're saying. 200ish feet per second doesn't make much of a difference down range, especially with the 77s. I'd even argue that the slower velocities can be better because wind has less of an effect on the projectile.

Still, faster is generally better, as long as it isn't at the expense of accuracy. My problem with the AAC stuff is that the accuracy has varied pretty drastically from lot to lot.

For me, at the .50 per round sale price, it's still too expensive when you add on tax and shipping. As of recently, I've gone to the Winchester contract overrun stuff, loaded with the 77gr Match Burners. At .70 or less per round, shipped, it's a better deal because it is consistent. It's slow, but the consistency of accuracy doesn't leave me scratching my head.

Unfortunately, I don't think I'll be able to get any more of that stuff.

saddlerocker · 2025-05-11T14:16:35-0400

Reports from some people said it was 1.5-2MOA with the powder change vs 1MOA or better before.

That is the main reason I'm in no hurry to buy more right now.

I get consistent 3/4MOA in my bolt gun with the old stuff.

yosemite_sam · 2025-05-11T17:36:19-0400

TonyAngel said:
I get what you're saying. 200ish feet per second doesn't make much of a difference down range, especially with the 77s. I'd even argue that the slower velocities can be better because wind has less of an effect on the projectile.

Still, faster is generally better, as long as it isn't at the expense of accuracy. My problem with the AAC stuff is that the accuracy has varied pretty drastically from lot to lot.

For me, at the .50 per round sale price, it's still too expensive when you add on tax and shipping. As of recently, I've gone to the Winchester contract overrun stuff, loaded with the 77gr Match Burners. At .70 or less per round, shipped, it's a better deal because it is consistent. It's slow, but the consistency of accuracy doesn't leave me scratching my head.

Unfortunately, I don't think I'll be able to get any more of that stuff.

From what I understand, the slower the projective the longer it has to be effected by the wind. In my charts the new load holds its 3 mph gun number til 400 whereas the old was 500.

yosemite_sam · 2025-05-11T17:37:37-0400

saddlerocker said:
Reports from some people said it was 1.5-2MOA with the powder change vs 1MOA or better before.

That is the main reason I'm in no hurry to buy more right now.

I get consistent 3/4MOA in my bolt gun with the old stuff.

1 MOA or better in a gas gun?

As it stands it’s as cheap or cheaper than xtac 55g and more accurate.

fedupflyer · 2025-05-11T18:28:08-0400

yosemite_sam said:
1 MOA or better in a gas gun?

Yes, the stuff I bought last fall was giving me 0.6 MOA

saddlerocker · 2025-05-11T18:44:07-0400

Lots of M193 55gr 5.56 around 40cpr with free shipping.
The AAC when on sale is .50cpr + shipping...

The projectile is much better for sure, but saying it's the same price is misleading.

TonyAngel · 2025-05-11T21:35:38-0400

yosemite_sam said:
From what I understand, the slower the projective the longer it has to be effected by the wind. In my charts the new load holds its 3 mph gun number til 400 whereas the old was 500.

You are right. I have brain farts sometimes and I was thinking in terms of some rimfire ammo. Even that might have been something I heard in a dream.

I don't usually pay attention to those differences. I get what shoots good for the price right now and then I do what my ballistic calculator tells me to.

yosemite_sam · 2025-05-11T22:27:26-0400

fedupflyer said:
Yes, the stuff I bought last fall was giving me 0.6 MOA

How many round groups, what barrel, how many times? What was the average group size?

saddlerocker · 2025-05-12T18:07:01-0400

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American Ammunition Company 77gr SMK HPBT

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