10
11
LOS Mode
The Ranger 1000’s LOS (Line of Sight)
mode is specialized for rifle shooters who
are using slope correcting ballistic drop data
cards, ballistic cell phone applications, or
PDAs with ballistic programs and who are
shooting at distances beyond 500 yards and
with slopes greater than 15 degrees (INC
readings of 97 or less). Most shooters and archers
will not
need to
use LOS mode.
The range number displayed in LOS mode is the actual
line of sight range with no ballistic correction for slope.
Most of the commonly used ballistic devices can provide
independent slope correction for bullet drop data and require
actual line of sight range input. Using the LOS range when
calculating bullet wind drifts under these steep slope/long
range conditions will provide a higher degree of accuracy
than using the HCD range.
To use, simply input the LOS range number into the electronic
device or use the LOS range when referencing ballistic drop
cards with slope correction.
LRBC Field Card
Slope Drop
Columns
Ruger 77 .300 Win Mag / BH 190 HPBT
Ballistic Coefficient: 0.27
Muzzle Velocity: 2950
5000 / 59
Incline 0 10 20 30 40
100
200
300
400
500
550
600
650
700
750
800
850
900
950
1000
0.5
1.0
1.6
2.2
2.8
3.1
3.5
3.8
4.1
4.5
4.9
5.3
5.7
6.1
6.5
1.3
0.0
2.0
4.3
6.9
8.3
9.7
11.2
12.7
14.3
16.0
17.8
19.6
21.6
23.6
1.4
0.1
1.9
4.2
6.7
8.1
9.5
10.9
12.5
14.1
15.7
17.5
19.3
21.2
23.2
1.5
0.2
1.6
3.8
6.2
7.5
8.8
10.2
11.7
13.2
14.8
16.4
18.2
20.0
21.9
1.6
0.5
1.2
3.2
5.4
6.5
7.8
9.1
10.4
11.8
13.3
14.8
16.4
18.1
19.8
1.8
1.0
0.5
2.3
4.2
5.3
6.3
7.5
8.7
9.9
11.2
12.5
14.0
15.4
17.0
w d d d d d
*Powered by GSeven.com
w = Wind
d = Drop
LOS Range
INC
You can generate your
own slope-correcting drop
data card for your favorite
rifle and load. Go to the
free Long Range Ballistic
Calculator (LRBC) on
vortexoptics.com.