Small Arms and Maximum Point-blank Range
Small arms are often sighted-in so that the sight line and bullet path are within a certain acceptable margin out to the longest possible range, called the maximum point-blank range. The range of distance inside the maximum point-blank range is greatly dependent on the external ballistics of the cartridge in question; high velocity rounds have long point-blank ranges, while slow rounds have much shorter point-blank ranges. Other factors in the blank range are the target size (which determines how far above and below the line of sight the trajectory may deviate), the height of the sights, and an acceptable drop before a shot is ineffective.
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