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A ballistic chronograph or gun chronograph is a measuring instrument used to measure the velocity of a projectile in flight, typically fired from a gun or other firearm. The instrument is often useful for tasks such as gauging the utility of a firearm or safety of non-lethal projectiles fired from items such as a paintball gun or BB gun .
A green ballistic pendulum Animation of a ballistic pendulum. A ballistic pendulum is a device for measuring a bullet's momentum, from which it is possible to calculate the velocity and kinetic energy. Ballistic pendulums have been largely rendered obsolete by modern chronographs, which allow direct measurement of the projectile velocity.
Robins used the ballistic pendulum to measure projectile velocity in two ways. The first was to attach the gun to the pendulum, and measure the recoil. Since the momentum of the gun is equal to the momentum of the ejecta, and since the projectile was (in those experiments) the large majority of the mass of the ejecta, the velocity of the bullet ...
The Thompson–LaGarde Tests have since been criticized as being "highly unscientific" and producing a recommendation unsupported by the test results. [7] Others, notably Julian Hatcher [9] and Jeff Cooper, [10] regarded the tests as well conducted, and the recommendation as fully supported by the evidence available to the board, and empirical evidence subsequently available concerning ...
M10: A ballistics computer, part of the M38 fire control system, for Skysweeper anti-aircraft guns. M13: A ballistics computer for M48 tanks. M14: A ballistics computer for M103 heavy tanks. M15: A part of the M35 field artillery fire-control system, which included the M1 gunnery officer console and M27 power supply.
Having birds in the garden creates a lively space and a free show where you can observe them eating, looking for caterpillars, using a birdbath, or drinking water.Setting up a birdhouse doesn't ...
C.I.P. decisions, texts and tables, CD-ROM version download (ZIP and RAR format) (Archived) NATO Standard AEP-97, Multi-Calibre Manual of Proof and Inspection (M-CMOPI) for NATO Small Arms Ammunition, Volume 8, NATO Reference Ammunition, Edition A Version 1 (from page 261) Archived
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