Had the opportunity to do an extremely quick chrono session yesterday using a friend’s gear with my 16” AUG NATO @ Normal Setting, had some interesting results. Conditions were as follow:
1,357’ Elevation.
78° F, Sunny.
89% Humidity.
30.14 Barometric Pressure.
Ammo tested and 12-shot averages, chronograph set @ 15’ from muzzle:
• Winchester 55 grain M193 (Loaded @ Lake City):
3,104 FPS
52 FPS Extreme Spread
13.78 Standard Deviation.
*NOTE: Excessive flash on all shots.
• PMC XTac 62 gr LAP (M855):
2,984FPS.
98 FPS ES.
25.16 SD.
*NOTE: No flash signature or excess smoke upon firing.
• ADI F1 62 gr (M855):
2,932 FPS.
65 FPS ES.
20.26 SD.
*NOTE: No flash signature but, lots of smoke discharge.
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