Figure F-8. Use of the clock system to specify wind direction and value winds from left blow the bullet to the right winds from right blow the bullet to the left

conditions can be determined.) A wind of greater speed increases bullet movement by a uniform amount — a 15-mph wind moves the bullet at all ranges 11/2 times more than a 10-mph wind. Using these data, firers can determine wind effects for all conditions.

Figure F-9. Example of effects of a 10-mph wind

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