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2. Shotgun slug - Wikipedia

   en.wikipedia.org/wiki/Shotgun_slug

   The internal pressure of the shotshell load will actually be slightly higher than the equivalent mass slug projectile load, due to an increased resistance that occurs from a phenomenon known as shot setback. Common 12 gauge slug masses are 7 ⁄ 8 oz (383 gr (24.8 g), 1 oz (437.5 gr (28.35 g), and 1 + 1 ⁄ 8 oz (492 gr (31.9 g), the same ...

3. Shotgun cartridge - Wikipedia

   en.wikipedia.org/wiki/Shotgun_cartridge

   This measurement comes from the time when early cannons were designated in a similar manner—a "12 pounder" would be a cannon that fired a 12-pound (5.4 kg) cannonball; inversely, an individual "12-gauge" shot would in fact be a 1 ⁄ 12 pounder. Thus, a 10-gauge shotgun has a larger-diameter barrel than a 12-gauge shotgun, which has a larger ...

4. Gauge (firearms) - Wikipedia

   en.wikipedia.org/wiki/Gauge_(firearms)

   The move to steel shot reduced the use of 16 and 20 gauges for waterfowl hunting, and the shorter, 2 + 3 ⁄ 4-inch (70 mm), 12-gauge shells as well. However, the 3 + 1 ⁄ 2-inch (89 mm) 12-gauge shell, with its higher SAAMI pressure rating of 14,000 psi (97 MPa) compared to standard 2 + 3 ⁄ 4-inch (70 mm) and 3-inch (76 mm) 12-gauge shells ...

5. Shot (pellet) - Wikipedia

   en.wikipedia.org/wiki/Shot_(pellet)

   The size of the lead shot that is produced is determined by the diameter of the orifice used to drip the lead, ranging from approximately 0.018 inches (0.46 mm) for #9 lead shot to about 0.025 inches (0.64 mm) for #6 or #7.0 shot, while also depending on the specific lead alloy that is used.

6. Military 12-gauge cartridges - Wikipedia

   en.wikipedia.org/wiki/Military_12-gauge_cartridges

   2.75 inches (7.0 cm) Military use of combat shotguns through the 20th century has created a need for ammunition maximizing the combat effectiveness of such weapons within the limitations of international law . 12- gauge has been widely accepted as an appropriate bore diameter to provide an effective number of projectiles within an acceptable ...

7. Bean bag round - Wikipedia

   en.wikipedia.org/wiki/Bean_bag_round

   The bean bag round typically consists of a small fabric "pillow" filled with #9 lead shot weighing about 40 grams (1.4 oz). It is fired from a normal 12-gauge shotgun.When fired, the bag is expelled at around 70 to 90 metres per second (230 to 300 ft/s); it spreads out in flight and distributes its impact over about 6 square centimetres (1 sq in) of the target.

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9. List of body armor performance standards - Wikipedia

   en.wikipedia.org/wiki/List_of_body_armor...

   28.4±0.1 g (437±1.54 gr) 12 gauge rifled lead slug at a velocity of 435±25 m/s BFD (Back Face Deformation) to be measured after each shot, maximum allowed BFD for HG1/A class is 44 mm (1.7 in) and 25 mm (0.98 in) for the rest.