SLW Barrel Shootout – Federal Gold Medal Match 77gr Ammo Performance

The third ammo we are posting the data for is possibly one of the most popular and well known ‘Match’ .223 rounds, Federal Gold Medal Match 77gr (also known as FGMM 77gr). Federal Gold Medal Match is frequently used as the measuring stick that all other ammo’s are compared to in most common calibers. It is one of the most expensive at $1.00+ a round but has a well earned reputation for quality and repeatability.

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 FGMM 77gr shot an average of 2403.583 fps between the 60 shots fired out of the 3 different 16″ barrels we tested. FGMM 77gr had velocities in the middle of the pack but one of the lowest Standard Deviations with a 17.88 FPS average of the 6 – 10 shot groups. 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.

fgmm-77gr-velocity-fps-16-barrel

Ballistic Advantage (Series 1) Ballistic Advantage (Series 2)
Stats – Average 2395.49 fps Stats – Average 2410.56 fps
Stats – Highest 2429.65 fps Stats – Highest 2430.27 fps
Stats – Lowest 2376.1 fps Stats – Lowest 2387.38 fps
Stats – Ext. Spread 53.55 fps Stats – Ext. Spread 42.9 fps
Stats – Std. Dev 19.12 fps Stats – Std. Dev 11.02 fps
Shot ID V0 11/12/2016 Shot ID V0 11/13/2016
1 2430 14:38:50 1 2411 12:46:55
2 2376 14:39:01 2 2416 12:47:19
3 2384 14:39:14 3 2408 12:47:44
4 2401 14:39:25 4 2409 12:48:13
5 2390 14:39:35 5 2410 12:48:34
6 2377 14:39:46 6 2402 12:49:02
7 2386 14:39:56 7 2417 12:49:23
8 2401 14:40:08 8 2430 12:49:47
9 2383 14:40:22 9 2387 12:50:07
10 2426 14:40:36 10 2415 12:50:31
Criterion (Series 1) Criterion (Series 2)
Stats – Average 2392.48 fps Stats – Average 2415.88 fps
Stats – Highest 2443.75 fps Stats – Highest 2449.39 fps
Stats – Lowest 2367.01 fps Stats – Lowest 2378.73 fps
Stats – Ext. Spread 76.74 fps Stats – Ext. Spread 70.66 fps
Stats – Std. Dev 22.19 fps Stats – Std. Dev 18.08 fps
Shot ID V0 11/12/2016 Shot ID V0 11/13/2016
1 2444 16:32:27 1 2449 14:35:46
2 2375 16:32:46 2 2399 14:36:08
3 2413 16:33:02 3 2410 14:36:28
4 2367 16:33:15 4 2379 14:36:45
5 2382 16:33:28 5 2419 14:37:06
6 2388 16:33:40 6 2420 14:37:31
7 2388 16:33:54 7 2423 14:37:52
8 2389 16:34:07 8 2420 14:38:11
9 2400 16:34:19 9 2421 14:38:31
10 2379 16:34:29 10 2419 14:38:51
LaRue (Series 1) LaRue (Series 2)
Stats – Average 2413.63 fps Stats – Average 2393.78 fps
Stats – Highest 2445.51 fps Stats – Highest 2422.45 fps
Stats – Lowest 2384.18 fps Stats – Lowest 2366.35 fps
Stats – Ext. Spread 61.32 fps Stats – Ext. Spread 56.1 fps
Stats – Std. Dev 17.21 fps Stats – Std. Dev 19.68 fps
Shot ID V0 11/12/2016 Shot ID V0 11/13/2016
1 2429 17:30:52 1 2422 11:10:41
2 2384 17:31:10 2 2390 11:10:59
3 2446 17:31:26 3 2417 11:11:17
4 2413 17:31:50 4 2369 11:11:35
5 2409 17:32:05 5 2366 11:11:54
6 2411 17:32:25 6 2380 11:12:30
7 2399 17:32:36 7 2413 11:12:49
8 2410 17:32:49 8 2387 11:13:19
9 2406 17:33:02 9 2387 11:13:36
10 2429 17:33:22 10 2405 11:14:00

Next are the targets, each barrel shot one 10 round and 2 5 round groups for a total of 60 rounds fired. Barrel 3 had the smallest 5 round group of all the testing with a .701 MOA target and a 5 shot group average of .987167 MOA averaged between all 6 groups. This ammo performed very well with all 3 barrels and showed why it has such a great reputation.

fgmm-77-10-and-5-shot-watermark

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