Quote:
Originally Posted by synolimit
I've seen tons and tons of ar500 videos and almost nothing penetrates it. Yesterday we were shooting at a 6x8 1/4" plate you can get off ebay for a plate carrier. We shot 8mm Mauser 196gr from a 1944 Mauser 24.5", .308 150gr from a Springfield m1a 18", every 5.56mm you can think of including green tip from 10" to 18" barrels etc. not even more than a few dings.
A guy comes along and punches right through it 5 times with a ar15 like it was nothing! I ask him what ammo he used and he just said normal 55gr FMJ!! But he says with his 24" barrel they're doing 3700fps. Was this guy telling the truth? I get more velocity is better but even a normal 55gr round at that speed I'd think ar500 would stop it. Any thoughts or calculators out there to guess his kinetic energy when a .308 m1a wouldn't even scratch it? Was he lying? Using AP rounds?
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I call BS. The longer barrel won't increase muzzle velocity, that is a function of the powder that is burned. At that speed, that bullet would come apart on impact, not penetrate. The chamber pressure required to generate that velocity would exceed SAAMI specifications and the gun isn't long for this world. My guess is steel-cored 5.56, since it defeats most armor out there. That's my
