usable rate of fire

usable rate of fire

[′yüz·ə·bəl ′rāt əv ′fīr]
(ordnance)
Normal rate of fire of a gun in actual use, measured in units of shots per minute; the usable rate of fire is considerably less than a gun's maximum rate of fire, which is a theoretical value based on the purely mechanical operation of a weapon.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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