Re: New Life for Millennium's End

["Robert J. Hansen" <rjhansen@xxxxxxxx>]

> What i am saying is that if you take a headshot with your barret at
> 1200m and hit perfect on target, then zoom back and take a headshot at a
> different range, the point of impact can differ by as little as 1mm to as
> large as 30cm.  Scopes are only as unbalancing as you let them be.

More than 30cm for a 1200m shot.  Muzzle velocity of a .50 fired from a
Barrett is 854m/s.  That means at 1200m it's been in flight for one and a
half seconds.  According to physics, it'll drop by one-half the force of
gravity multiplied by the square of the time it's in freefall--or,
(.5)*(9.8)*(1.5)*(1.5).  Do the math; gravity will drop the bullet by about
eleven /meters/.  On top of that, with a flight time of one and a half
seconds, your target's likely not going to be in the same position as he was
when you took the shot.

Now, bullet ballistics may offset this slightly by lifting the bullet in
mid-trajectory.  You're still going to be looking at in the neighborhood of
a ten-meter bullet drop, though, and a one-and-a-half second flight time.

(Note that I don't have any authoritative numbers on muzzle velocity; most
that I've seen list 850-870m/s, and one as high as 916m/s.)