How To Use The Sight Scale Vertical Calculator

Procedure:

  1. Set up a tall target at 100 yards (PHYSICALLY MEASURE FROM TARGET TO SCOPE) with a vertical line (confirmed with plumb bob or level).
  2. Place an aim point near the bottom of the vertical line and shoot a group to confirm zero.
  3. Dial up at least 30 MOA (or 10 MILS) of elevation and shoot another group.
  4. Measure the distance between shot groups with a tape measure. ( See fractions to decimals table at bottom of page )
  5. Use the calculator below to calculate your scopes Correction Factor (CF).
  6. Apply the Correction Factor to any raw ballistic solution to account for scope tracking error.
  7. Enter Correction Factor into Sight Scale Vertical section of the Applied Ballistics Solver. ( SEE SCREENSHOT )
  8. See below videos for instructions on use of this calculator and how to do a tall target test
SSV-Screenshot

click image to enlarge

Correction Factor Calculator


FRACTION TO DECIMAL TABLE
1/32″ = 0.03125
2/32″ or 1/16″ = 0.0625
3/32″ = 0.09375
4/32″ or 1/8″ = 0.125
5/32″ = 0.15625
6/32″ or 3/16″ = 0.1875
7/32″ = 0.21875
8/32″ or 1/4″ = 0.25
9/32″ = 0.28125
10/32″ or 5/16″ = 0.3125
11/32″ = 0.34375
12/32″ or 3/8″ = 0.375
13/32″ = 0.40625
14/32″ or 7/16″ = 0.4375
15/32″ = 0.46875
16/32″ or 1/2″ = 0.5
1/32″ = 0.53125
18/32″ or 9/16″ = 0.5625
19/32″ = 0.59375
20/32″ or 5/8″ = 0.625
21/32″ = 0.65625
22/32″ or 11/16″ = 0.6875
23/32″ = 0.71875
24/32″ or 3/4″ = 0.75
25/32″ = 0.78125
26/32″ or 13/16″ = 0.8125
27/32″ = 0.84375
28/32″ or 7/8″ = 0.875
29/32″ = 0.90625
30/32″ or 15/16″ = 0.9375
31/32″ = 0.96875
X