Look Who it Was Random video

Does an M14 really turn cover into concealment? Part 6: 50m concrete

2,792 views · Published 10 September 2015 · 3:58 · Indexed 12 November 2026

Channel: News of the Pews · 2015 · Science & Technology

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M1A vs. AR at 50 meters against concrete blocks. In previous tests we looked at the effect of only a single round and at very close range. This time we put the AR against the M1A head to head, with as many rounds fired as were necessary to reduce the target to pieces too small to reasonably hit. Both shooters attempted to fire their rifle as quickly as they could make accurate hits.

The M1A is firing M80 FMJ while the AR is firing M855.

At first, we expected the heavier recoil of the 7.62 rifle to cause it to be fired more slowly but as it turns out, both shooters had approximately the same cadence.

As this video demonstrates, the 7.62mm does take substantially larger chunks out of the concrete.
But which rifle wins?

There are several approaches that we could use to measure the difference between the two cartridges. One way to look at it is that the M1A finished first and was therefore the winner. Another way to view it is that the M1A did with eight rounds what the AR did with eighteen rounds and again, the M1A was the winner. On the other hand, we allotted two twenty round magazines for the AR and only one for the M1A because its ammunition weighs twice as much. The AR shooter never had to load his second magazine, but he finished this test with nearly twice as much ammunition remaining.

Now, it bears mentioning that both shooters were of approximately the same skill but that the AR was not zeroed by that shooter. If the misses from both rifles are factored out, the AR still requires more rounds to “turn cover into concealment” but the AR shooter still finishes with twice as much ammo remaining.


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