• Easy ranging of the target in the eld with no mathematical
• Quick and accurate compensation for wind drift and bullet
The NP1-RR ranging scale works on the principle of known size
of the target in inches. The diagram above is a breakdown of
the ranging scale: step, circle, baseline and yards. Distance from
step to baseline (inside edges) = 18 inches. Diameter of circle =
9 inches. Distance from bottom of circle to baseline = 9 inches.
• Deer average 18–20 inches from brisket to shoulder.
• Coyotes average 18–20 inches in height.
• Fox average 10–12 inches in height.
• Prairie dogs average 9–10 inches standing.
The ranging scale remains effective in the ﬁeld even with small
variances in target size.
You can recalibrate the ranging scale in your Nightforce scope
for target sizes other than 18 inches and 9 inches.
Decreasing magniﬁcation from speciﬁed settings will increase
values of the ranging scale and bullet drop scale. Increasing
magniﬁcation will have the opposite effect and will decrease
Recalibrating the ranging scale for a 20-inch target
Place a target 20 inches in height, exactly 300 yards away. Look-
ing through the scope at the target, decrease the magniﬁca-
tion until the inside edges of the step and the baseline bracket
the target in the 300 yard column. Mark your magniﬁcation
ring at this point to align with the indicator mark on the tube
body. Your scope is now capable of ranging 9 inch, 18 inch and
20 inch targets, depending on the magniﬁcation you have the
scope set on. This can be done for a wide range of target sizes