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3. Note the number corresponding to the lead line in step 2; divide that line value in half. For example, if the 12” target fits between
the 4 mph lead line and the horizontal stadia line, divide that in half to get a value of 2.
4. Place the 2 mil elevation hold (usually expressed as “2 mils high” or “+2
mils”) on target and fire.
This process works well for many cartridges and weapon systems,but not all
will impact exactly the same. However this system should place you close
enough to make a solid hit, all else being equal. If shooting with a different
caliber or muzzle velocity, you may need to add to or subtract from the original
elevation hold to adapt the formula for your needs.
CALCULATING HOLDS FOR MOVING TARGETS
The H59 reticle has a series of even numbers above the main horizontal stadia.
These numbers represent speeds for moving targets at 2, 4, 6, 8 and 10
mph, with additional holds starting at 20 mils and continuing every 10 mph
thereafter to the left and right. These speeds are optimized for .308 caliber, but
may be used with many other calibers.
To hold on a target moving at one of these speeds, simply hold the portion of
the horizontal stadia that intersects with the short line nearest the number
representing the target speed over the moving target, accounting for possible
adjustments for distances different from optimal. If using the Horus grid (below