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Wind Doping
Long Rifle Wind
Shoot The Wind
Bernoulli Effect
A Point to Ponder
According to Stump
Velocity Chart

RULE NO 4.

Use the sighter as a measuring tool to determine the effect of any particular wind condition.
It is not necessary to memorize a lot of rules or mathematical formulas about the deflection of the bullet for a wind of “X” miles per hour at some specified angle. In the first place, few people can estimate the absolute velocity of the wind without the aid of instrumentation. In the second place, you would spend more time doing arithmetic than shooting on some ranges I know. The scoring rings on the sighter make a very convenient tool for measuring bullet deflection, particularly with telescopic sights. For example, the distance between rings on the 100 yard target is one inch. The drift of impact from the point of aim may be estimated very accurately using these rings. Care must be exercised, however, to watch for elevation changes with a corresponding horizontal drift. In general, the change in elevation is to 4 o’clock for a wind from the left, and to 10 o’clock for a wind from the right. A rule of thumb for any given horizontal correction; take one-half the correction in elevation, although this may very from rifle to rifle and also between lot number of the same ammunition. The shooter should be thoroughly familiar with the characteristics of his rifle and ammunition before entering an important tournament.
Up to this point, much emphasis has been placed on the use of the sighting bull as a doping aid. It might be worthwhile to digress for a moment and talk about how to use the sighter efficiently. Nothing is more frustrating than to be down to the last two or three shots – short on time – a big switch in conditions – and the sighter looks like it had been used to pattern a shotgun! A few tips are offered here to help minimize that situations, particularly when shooting with irons. If the sighter is used heavily to check changes in condition, estimate the change and make a sight correction before firing. This will reduce the total number of shots in the nine ring, and make it easier to find a shot later in the stage. If the ten ring on the sighter is shot away, horizontal drift may be estimated by shading the sight picture to 12 or 6 o’clock. Similarly, elevation changes may be checked by shading to 3 or 9 o’clock. The shooter should practice this shading technique to develop his confidence before attempting it in an important tournament. With telescopic sights, the advice is similar. Try to save a portion of the sighter in case it is necessary to go back late in the stage. Last but not least, don’t use the sighter unnecessarily. Only use it to check conditions that you think you want to shoot in. If you don’t like the looks of any particular condition, wait it out.
 
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