SLW Barrel Shootout – ASYM 77gr Ammo Performance

The fourth ammo we are posting the data for is ASYM .223 Rem 77gr OTM SMK. This is a lesser known round but a little cheaper than some of the other match rounds used in this test.

All Chrono data was measured by a LabRadar Doppler Chronograph and the data was pulled from the strings saved to its SD card

All target measurements were done with OnTarget Precision Calculator software.


The ASYM 77gr shot an average of 2452.561 fps between the 57 shots fired out of the 3 different 16″ barrels we tested. The second set of chrono data on the Ballistic Advantage barrel had 3 shots missing for that set due to a dying battery on the chrono. (This was the only fault found with the LabRadar over two full days of shooting and could have been easily remedied with starting on a full battery). ASYM 77gr had average velocities when compared to the other 9 ammo’s tested and an Averaged Standard Deviation over 6 series of 10 shots of 21.07 FPS. The graph below shows the shot to shot velocity of each string and also the average of each string at the end (data point 11). Further down is the raw data that this graph was generated from.

asym-77gr-velocity-fps-16-barrel

Ballistic Advantage (Series 1) Ballistic Advantage (Series 2)
Stats – Average 2460.88 fps Stats – Average 2450.58 fps
Stats – Highest 2501.57 fps Stats – Highest 2479.2 fps
Stats – Lowest 2437.13 fps Stats – Lowest 2425.77 fps
Stats – Ext. Spread 64.44 fps Stats – Ext. Spread 53.43 fps
Stats – Std. Dev 21.93 fps Stats – Std. Dev 20.49 fps
Shot ID V0 11/12/2016 Shot ID V0 11/13/2016
1 2494 14:45:01 1 2476 12:25:13
2 2454 14:45:15 2 2479 12:26:00
3 2446 14:45:28 3 2437 12:26:21
4 2455 14:45:41 4 2438 12:26:38
5 2461 14:45:53 5 2442 12:27:03
6 2471 14:46:02 6 2456 12:27:56
7 2439 14:46:13 7 2426 12:28:49
8 2502 14:46:30
9 2450 14:46:45
10 2437 14:46:57
Criterion (Series 1) Criterion (Series 2)
Stats – Average 2429.99 fps Stats – Average 2468.11 fps
Stats – Highest 2460.97 fps Stats – Highest 2516.14 fps
Stats – Lowest 2408.5 fps Stats – Lowest 2431.36 fps
Stats – Ext. Spread 52.48 fps Stats – Ext. Spread 84.78 fps
Stats – Std. Dev 18.28 fps Stats – Std. Dev 27.82 fps
Shot ID V0 11/12/2016 Shot ID V0 11/13/2016
1 2461 16:08:15 1 2462 14:20:30
2 2451 16:08:29 2 2431 14:20:51
3 2433 16:08:44 3 2432 14:21:09
4 2437 16:09:01 4 2456 14:21:28
5 2425 16:09:22 5 2504 14:21:49
6 2421 16:09:37 6 2457 14:22:13
7 2409 16:09:50 7 2461 14:22:38
8 2408 16:10:05 8 2516 14:23:02
9 2411 16:10:18 9 2480 14:23:22
10 2443 16:10:30 10 2483 14:23:40

 

LaRue (Series 1) LaRue (Series 2)
Stats – Average 2469 fps Stats – Average 2436.19 fps
Stats – Highest 2503.71 fps Stats – Highest 2475.56 fps
Stats – Lowest 2448.56 fps Stats – Lowest 2417.56 fps
Stats – Ext. Spread 55.15 fps Stats – Ext. Spread 57.99 fps
Stats – Std. Dev 15.29 fps Stats – Std. Dev 22.62 fps
Shot ID V0 11/12/2016 Shot ID V0 11/13/2016
1 2477 17:01:25 1 2476 11:17:08
2 2465 17:01:40 2 2455 11:17:29
3 2504 17:01:57 3 2438 11:17:55
4 2464 17:02:16 4 2426 11:18:18
5 2457 17:02:32 5 2419 11:18:40
6 2459 17:02:45 6 2470 11:19:47
7 2480 17:03:01 7 2419 11:20:18
8 2465 17:03:19 8 2422 11:20:36
9 2470 17:03:35 9 2418 11:20:56
10 2449 17:03:47 10 2419 11:21:17

Next are the targets, each barrel shot one 10 round and 2 5 round groups for a total of 60 rounds fired. Barrel 1 had the smallest 5 round group of all the testing with a .968 MOA target and a 5 shot group average of 1.264333 MOA averaged between all 6 groups.

 

asym-10-and-5-shot-watermark

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