@Kraigwy,
Quote:
Assuming that's true, 16 cm is 6.3 inches at 100 yards.
That ain't gonna work. The average shoulder width of a man is 19 inches.
Thats the size of the E-silhouette. 19X40. 19/6.3 is less then 300 yards.
The "effective range" of the M16a1 was 460, to do that you'd have to keep it under 4 inches.
But I was never one to accept "accurate enough".
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Well 6.3 (at 100 M) x 3 = 18.9 at 300 m, so you should have a chance of hitting a stationary man-sized target at 300 m. Again, if I recall correctly, you had to hit 26 out of 40 total exposures to qualify and I don't think but three or four of them were 300 m targets. Of course they didn't stay up forever either.
I think the 460 m figure for the M16A1 was the distance at which the round would puncture some standard NATO metal plate - if you hit it. I always figured the M16 and M4 series rifles to be 300 m rifles; meaning that they were flat shooting enough that if they were properly zerored you ought to hit a man-sized target out to 300 m if you aimed at the middle of the target. And the round moved quick enough that if the wind and so forth wasn't too horrible, it wouldn't make much difference.
So that's what I always thought the logic of the M16 and M4 rifle design, zero and quailfication standards were. Someone who barely met the standard and firing from a fighting position or the prone ought to be able to at least scare the hell out of someone standing 300 m away.