Sightron Riflescopes - Manual (Page 10)

The distance between the center of each dot is 1 mil. To get
a more concrete measurement, some may prefer to use the
edges of the dots instead of the center. So top-edge to top-
edge would be 1 mil, right-edge to right-edge would be 1
mil and so on.
Ranging formulas:
Height of target (in.)
_______________ x 27.78 = distance to target (yards)
mils(covered by object)
Height of target (in.)
_______________ x 25.40 = distance to target (meters)
mils(covered by object)
Height of target (meters)
_______________ x 1000 = distance to target (meters)
mils(covered by object)
Height of target (cm.)
_______________ x 10 = distance to target (meters)
mils(covered by object)
slight error in the range estimation, but likely not
enough to miss the target. Accurate “milling” only
comes with practice and a good eye.
To demonstrate (formulas below):
Shooter 1 estimate:
(30” target/ 1.1 mils) x 27.78 = 757.6 yards
Actual size:
(30” target/1.15 mils) x 27.78 = 724.7 yards
Shooter 2 estimate:
(30” target/1.2 mils) x 27.78 = 694.5 yards
Notice the error is approximately 30 yards if the mil
value is not correct to the 0.05 mil. Most times this will
not result in a miss, but it is best to make as accurate a
“mill-call” as possible. Dots and hashes within the mil-
dot reticle help the shooter accurately gauge the dis-
tance a target covers on the reticle. The smaller the gap
between each mark, the more accurately one can gauge
he proper mill-value.
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