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  2. Rate of fire - Wikipedia

    en.wikipedia.org/wiki/Rate_of_fire

    Water-cooled weapons can achieve very high effective rates of fire (approaching their cyclic rate) but are very heavy and vulnerable to damage. A well-known example is the M1917 Browning machine gun, a heavy machine gun designed by John Browning and used by US forces during WWI.

  3. Muzzle velocity - Wikipedia

    en.wikipedia.org/wiki/Muzzle_velocity

    For projectiles in unpowered flight, its velocity is highest at leaving the muzzle and drops off steadily because of air resistance.Projectiles traveling less than the speed of sound (about 340 m/s (1,100 ft/s) in dry air at sea level) are subsonic, while those traveling faster are supersonic and thus can travel a substantial distance and even hit a target before a nearby observer hears the ...

  4. Gun chronograph - Wikipedia

    en.wikipedia.org/wiki/Gun_chronograph

    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.

  5. .357 Magnum - Wikipedia

    en.wikipedia.org/wiki/.357_Magnum

    In terms of accuracy, the .357 Magnum has at least the same potential for precision shooting as the benchmark .38 Special wadcutter round—indeed, a good .357 Magnum revolver will shoot .38 Special wadcutter ammunition with good results. It is this accuracy and power, and the versatility of also being capable of using less-expensive, milder ...

  6. .38 Special - Wikipedia

    en.wikipedia.org/wiki/.38_Special

    The .38 Long Colt revolver round would not penetrate the shields of the insurgent Philippine Moro warriors, and the government contracted with Smith & Wesson for a new revolver round. The .38 Special held a minimum of 21 grains of black powder, 3 grains more than the then-current .38 Long Colt, and muzzle velocity (with a 158 grain bullet) was ...

  7. Overpressure ammunition - Wikipedia

    en.wikipedia.org/wiki/Overpressure_ammunition

    Speer Gold Dot 124gr 9mm+P in SIG P226 magazines. Overpressure ammunition, commonly designated as +P or +P+ (pronounced Plus-P or Plus-P-Plus), is small arms ammunition that has been loaded to produce a higher internal pressure when fired than is standard for ammunition of its caliber (see internal ballistics), but less than the pressures generated by a proof round.

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    mail.aol.com

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  9. Internal ballistics - Wikipedia

    en.wikipedia.org/wiki/Internal_ballistics

    The defining characteristic of a revolver is the revolving cylinder, separate from the barrel, that contains the chambers. Revolvers typically have 5 to 10 chambers, and the first issue is ensuring consistency among the chambers, because if they aren't consistent then the point of impact will vary from chamber to chamber.