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Hornady 55 gr SP over 25.4 gr TAC fired from 11.5" and 16" AR-15 pattern rifles into calibrated 10% gelatin. Surefire FA556AR silencer was attached to both rifles.

BB: 590.5 fps, 3.7"

16" barrel results

Impact velocity: 3,014 fps
Penetration: 10.7"
Retained weight: 26.9 gr
Max expansion: 0.425"
Min expansion: 0.335"

11.5" barrel results

Impact velocity: 2,751 fps
Penetration: 12.1"
Retained weight: 31.3 gr
Max expansion: 0.410"
Min expansion: 0.350"

Big thanks to Eric802 for providing the ammo.

Is this the same bullet that was in the Fiocchi gel test?


Regardless, good wound cavity! Short cavity neck, nice overall cavity diameter and distance. My other only question, as i always ask, how does it do through barriers: heavy clothing, sheetrock, thin metal, etc?

Some folks have said it is. I don't know. It looks the same.


I'd like to do barrier tests but I would have to test far fewer loads. Maybe some day.