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Old 03-27-2007, 16:33   #7
jatx
Area Commander
 
Join Date: Aug 2004
Location: Texas
Posts: 1,355
Quote:
Originally Posted by Team Sergeant
EOTEC, IMO is for work 200 to zero meters. A weapons zero depends on your "working" preference.

Tell me what's the bullet drop from zero to 100 meters?

100 to 200?
200 to 300?

It also depends on what model weapon and what you're feeding it.
I am using M855 or its moral equivalent, which clocks about 2860 fps out of a 14.5" barrel. Using the JBM online calculator and a 300 yard zero, I estimate bullet drop as:

0-100 4.3 inches
100-200 4.3 + 1.7 inches = 6.0 inches
200-300 0 inches

A 200 yard zero would yield the following:

0-100 1.3 inches
100-200 0 inches

Others may get different results, but I am compensating for the POF Predator rail placing my reticle about 3 inches above bore axis.

While I understand your point about the Eotech, I've had no problem getting good hits with mine out past 300. The way I look at it, the center dot (1.5 MOA) is smaller in diameter than my FSP, so it obstructs less of the target at 300 yards than the iron sights on which I originally qualified.

If I were to use this target for a 300 yard zero and the rifle mentioned above, my inclination would be to hold a dot low from center mass. Since the Eotech's center dot is roughly 4.5 inches in diameter at 300 yards, that means my POI would be within 1 MOA of my POA at all distances <300 yards.

Am I thinking about this right?
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