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  2. Internal ballistics - Wikipedia

    en.wikipedia.org/wiki/Internal_ballistics

    For handgun cartridges, with heavy bullets and light powder charges (a 9×19mm, for example, might use 5 grains (320 mg) of powder, and a 115 grains (7.5 g) bullet), the powder recoil is not a significant force; for a rifle cartridge (a .22-250 Remington, using 40 grains (2.6 g) of powder and a 40 grains (2.6 g) bullet), the powder can be the ...

  3. 7.62×39mm - Wikipedia

    en.wikipedia.org/wiki/7.62×39mm

    It can penetrate a 6 mm (0.2 in) thick St3 steel plate at 300 m (328 yd) and 6Zh85T body armour at 30 m (33 yd). [citation needed] The 7N23 armour-piercing bullet, introduced in 2002, has a 3.6 g (55.6 gr) sharp-pointed steel penetrator made of steel U12A and retains the soft lead plug in the nose for jacket discarding. The bullet has a black tip.

  4. Power factor (shooting sports) - Wikipedia

    en.wikipedia.org/wiki/Power_factor_(shooting_sports)

    A minimum power factor of 120 kgr·ft/s (≈ 2.37 N⋅s) was previously required to activate the stop plate which stops the competitors time, but since around 2011 the stop plates are no longer connected to timers. Instead regular shot timers that register the last shot fired are used.

  5. 7.62×51mm NATO - Wikipedia

    en.wikipedia.org/wiki/7.62×51mm_NATO

    It has a long heavy bullet with a semi-armor-piercing iron or mild steel core and a gilded steel jacket. After the Vietnam War it was replaced by the M80 ball cartridge as the standard round. Data contained in TM 9-1005-298-12 mentions the approximate maximum range of 3,820-metre (4,180 yd) at 856.2-metre-per-second (2,809 ft/s) muzzle velocity.

  6. Ballistic plate - Wikipedia

    en.wikipedia.org/wiki/Ballistic_plate

    A pair of Small Arms Protective Insert plates, circa April 2006. These were issued to US Army units, before being replaced by the ESAPI. A ballistic plate, also known as an armour plate, is a protective armoured plate inserted into a carrier or bulletproof vest, that can be used stand-alone, or in conjunction with other armour. "Hard armour ...

  7. Full metal jacket (ammunition) - Wikipedia

    en.wikipedia.org/wiki/Full_metal_jacket_(ammunition)

    A full metal jacket (FMJ) bullet is a small-arms projectile consisting of a soft core (often lead) encased in an outer shell ("jacket") of harder metal, such as gilding metal, cupronickel, or, less commonly, a steel alloy. A bullet jacket usually allows higher muzzle velocities than bare lead without depositing significant amounts of metal in ...

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    mail.aol.com

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  9. .950 JDJ - Wikipedia

    en.wikipedia.org/wiki/.950_JDJ

    .950 JDJ cases are approximately 70 mm in length, and are based on a 20×102mm Vulcan case shortened and necked up to accept the .950 in (24.1 mm) bullet. Projectiles are custom-made and most commonly weigh 3,600 grains (230 g) which is 8.2 ounces or over half a pound.