Ironically
the distance at which the eyeball is most effective coincides with the distance
that a rifle can be fired point blank at most targets, given the proper
zero. If you have a target at a distance
inside 200-300 yards, the eye may be used to estimate range and make
corrections accordingly to good effect.
The rifle’s trajectory at these distances undergoes radically less
change inside these distances than it does farther out, where your eye won’t
work quite as accurately.
Things that
affect the apparent range to target are terrain and environmental factors. According to the reference materials I have
on hand, targets uphill will tend to appear farther away than they actually
are, and targets downhill will tend to appear closer. A valley between you and your target will
make it appear closer. Looking around at
stuff would suggest that a target in a narrow clearing with obstructions to
either side of your field of view would create a tunnel effect that makes the
target appear to be farther. A straight
visual line, such as a path or road, leading to the target is supposed to make
it look closer. I would have checked all
these out as part of my research for this article, but I don’t have a
rangefinder to verify my estimations.
It was really interesting to read.
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