Quote:
Originally Posted by Draq
Well its velocity and bullet weight that determines penetration, then factor in bullet type ei: hollow point or not. .22lr has decent velocity, but low weight, so its penetration is low.
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Except that if you actually research it, this doesn't hold up. The Wound Channel has clearly demonstrated with his armor tests that VELOCITY IS FAR MORE IMPORTANT THAN BULLET WEIGHT OR CONSTRUCTION in defeating armor. So has The Military Arms Channel.
The Wound Channel fires the 55gr 193 Ball round at a level 3 (rifle) plate and that round WILL PENETRATE the plate where a 62gr M855 (green tip) WILL NOT PENETRATE (irony?) the same plate. The difference? The M193 will push past 3200ft/sec while the M855 does around 2900ft/sec. The sweet spot for a level 3 plate seems to be 3000 ft/sec. Even hunting "soft points" that exceed 3000ft/sec will penetrate the plate. This has been tested by SEVERAL Youtubers with exactly the same results. This is confirmed by the fact that the new M855A1 ammo which is 16% faster than the old M855 will ALSO PENETRATE a SAPI plate. This round hits the same 3200ft/sec that M193 does. The 77gr MK282 and the Marine Corps new MK318 rounds (ranging from right at 2800 ft/sec to just below 2900ft/sec) WILL NOT PENETRATE A SAPI plate. MAC showed a 90gr 9mmP bullet going 1800ft/sec BLOW RIGHT THROUGH A LEVEL 2A SOFT VEST. This was a normal FMJ bullet, NOT an AP round. SPEED DEFEATS ARMOR. Bullet weight and sectional density CAN HELP, but they generally take a back seat to velocity in determining real world penetration.