Leupold RX-2800 TBR/W Complete Operating Instructions page 21

WIND Leupold's new TBR/W solution will provide a
fixed 10 mph full wind value, meaning it assumes the
wind is at 90 degrees to the muzzle . We chose 10 mph
as a way for the user to easily calculate corrections on
the fly . If the wind is 5 mph, from the 3 o'clock or 9
o'clock position, the shooter would half the hold value .
If the wind is 20 mph, the shooter would double the
wind hold value . If the wind isn't blowing at 90 degrees
to the muzzle, the shooter needs to adjust the hold value per Diagram shown . For
example, if the wind is at 45 degrees to the muzzle, adjust the wind hold value
by 75% . Because wind values change so quickly, we have found this method of
generating correction values for speed and direction will help
you get on target easier and faster .
Wind hold values will be displayed in the same output
format as elevation; either MOA, MIL, or inches/cm hold
values . TBR/W provides .5 MOA accuracy on elevation
and 1 .5 MOA accuracy on wind values at 600 yards for
cartridges expected to reach that distance . As with TBR,
the maximum distance is 800 yards .
18
12
11 1
0
.50 .50
10 2
.75 .75
9
1 1
.75 .75
8 4
.50 .50
0
7 5
6
Wind Values
TBR
W
M O A
BAS example
3