Carbine Comparison: 5.56x45mm M855 and .223 Rem 55gr FMJ 16" Gel Test

5.56x45mm Lake City M855 and .223 Rem 55gr FMJ fired from 16" 1:9" RRA upper into Clear Ballistics clear gel "10%" ballistic gelatin substitute to assess relative penetration, neck length, and yaw in comparison to other tests in this series.

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Please note that clear gel has the potential to yield inaccurate penetration results and the appearance of disturbance in the gel cannot be compared with real gelatin. This video is an extended version of a test that is a portion of a video to be published on TFB TV.

M855 (16"):
Neck: 8"
TSC: 2.5" x 6"

2,934
2,930
2,955
2,948
3,012
Average: 2,955.80
StdDev: 33.02
Min: 2,930
Max: 3,012
Spread: 82

55gr FMJ (16"):
Penetration: greater than 23"
Retained weight: 17.9gr
Max expansion:
Min expansion:
Neck: 4.5"
TSC: 2.5" x 4.5"

2,877
2,822
2,752
2,794
Average: 2,811.3
StdDev: 52.4
Min: 2,752
Max: 2,877
Spread: 125
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