Drift is a function of time of flight and projectile wheight, most small arms engagement occur under the range that drift comes into play. Even for indirect fire with small arms, the low projectile weight and relatively short TOF make drift a almost non-issue, the first weapon, in bore size that, mentions drift in TFT (tabular firing table) is the Mk-19 40mm grenade launcher.
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God truly fights on the side with the best artillery
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