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  2. Gauge (firearms) - Wikipedia

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

    A 12-gauge shotgun, nominally 18.5 mm (0.73 in), can range from a tight 18 mm (0.71 in) to an extreme overbore of 20 mm (0.79 in). Some also claim an increased velocity with the overbored barrels, up to 15 m/s (49 ft/s), which is due to the larger swept volume of the overbored barrel.

  3. Grade inflation - Wikipedia

    en.wikipedia.org/wiki/Grade_inflation

    In 100 level Math for the year 2006/07, the grade distribution of 11,042 assigned grades was: 31.9% A, 22.0% B, 18%C, 16.3% D, 11.8% F. In 400 level Fine Arts courses for 2006/07, the distribution of 50 assigned grades was: 100% A. [ 51 ] In relation to increased scores in first-year mathematics, there was no evidence of better preparedness of ...

  4. 14.5 × 114 mm - Wikipedia

    en.wikipedia.org/wiki/14.5_×_114_mm

    The 14.5×114mm (.57 calibre) is a heavy machine gun and anti-materiel rifle cartridge used by the Soviet Union, the former Warsaw Pact, modern Russia, and other countries.. It was originally developed for the PTRS and PTRD anti-tank rifles, and was later used as the basis for the KPV heavy machine gun that formed the basis of the ZPU series anti-aircraft guns that is also the main armament of ...

  5. Istiglal anti-materiel rifle - Wikipedia

    en.wikipedia.org/wiki/Istiglal_anti-materiel_rifle

    A 12.7×108mm version of the Istiglal 14.5mm anti-materiel sniper rifle introduced by the Ministry of Defense Industry of Azerbaijan. The 12.7mm Mubariz sniper rifle is much lighter in comparison to the Istiglal at 15 kg (33 pounds) with a five-round magazine. [2]

  6. French catheter scale - Wikipedia

    en.wikipedia.org/wiki/French_catheter_scale

    An increasing French size corresponds to a larger external diameter. This is contrary to Birmingham gauge, where an increasing gauge corresponds to a smaller diameter needle. The French size is a measure of the outer diameter of a catheter (not internal drainage channel, or inner diameter). So, for example, if a two-way catheter of 20 Fr is ...

  7. 12 mm caliber - Wikipedia

    en.wikipedia.org/wiki/12_mm_caliber

    This is a list of firearm cartridges which have bullets in the 12 millimetres (0.47 in) to 12.99 millimetres (0.511 in) caliber range.. Length refers to the cartridge case length.

  8. PTRS-41 - Wikipedia

    en.wikipedia.org/wiki/PTRS-41

    Finding the 12.7×108mm insufficient, they began development of what became the 14.5×114mm armour-piercing round. Rukavishnikov developed his anti-tank rifle M1939 [ ru ] to use this cartridge, but it was not successful because of some manufacturing issues, a sufficient number of more effective anti-tank guns in the Red Army, and high ...

  9. List of anti-materiel rifles - Wikipedia

    en.wikipedia.org/wiki/List_of_anti-materiel_rifles

    12.7×108mm RT-20 Croatia: 1993 Bolt-action 20x110mm Hispano Mambi AMR Cuba: 1981 Semi-automatic 14.5×114mm Falcon Czech Republic: 1998 Bolt-action .50 BMG 12.7×108mm Lahti L-39 Finland: 1939 Gas-operated 20x138mmB PGM Hecate II France: 1993 Bolt-action .50 BMG PDSHP Georgia: 2014 Bolt-action Semi-automatic 12.7×108mm Satevari MSWP Georgia: 2015