Leupold RX Operating Instructions Manual page 29

TBR PERFORMANCE GROUP SELECTION TABLE: FOR BEST FIT UP TO 800 YARDS
TBR
Group
Less than -96 inches of path height
A
B -96 to -120 inches
-139 to -164 inches**
C
AB -164 to -189 inches
AC -189 to -212 inches
-212 to -236 inches
BC
More than -236 inches of path height (if the path height is more than 250 inches, performance
ABC
will be reduced by the difference)
** If your bullet path height is less than -139 inches at 800 yards with a 200 yard sight-in, consider sighting-in at
300 yards and selecting group A or B. Alternately, you can use group C with a 200 yard sight-in, but the TBR will
be less accurate at extreme long ranges.
REMEMBER: Knowing your theoretical bullet path at long ranges is not a
license to take shots beyond ranges at which you have practiced, particularly
at game animals or where stray shots could hit unintended targets. It is your
responsibility to have an intimate familiarity with the performance of your
firearm and to know where the bullet is going to go. The RX rangefinder may
serve best as a tool for learning performance during practice at a secure range
so you are ready for that critical shot.
800 Yards Bullet Path
27
Sight-in
Range
300 Yards
300 Yards
200 Yards
200 Yards
200 Yards
200 Yards
200 Yards