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A 5.56 NATO round fired from a 20 in (510 mm) barrel has a flatter trajectory than a 7.62 NATO round fired from a barrel of equal length, while the 5.56 NATO fired from a 14.5 in (370 mm) barrel has the same trajectory as the 7.62 NATO from a 20 in barrel, as well as the same time of flight.
Ballistic training, also known as compensatory acceleration training, [1] [2] uses exercises which accelerate a force through the entire range of motion. [ 1 ] [ 3 ] It is a form of power training which can involve throwing weights, jumping with weights, or swinging weights in order to increase explosive power. [ 4 ]
Internal ballistics (also interior ballistics), a subfield of ballistics, is the study of the propulsion of a projectile. In guns , internal ballistics covers the time from the propellant 's ignition until the projectile exits the gun barrel . [ 1 ]
Barre in studios SM Stretching in Russia Three people doing barre exercises, performing pliés on relevé Some common equipment used in barre classes: a yoga strap, pilates soft ball, and hand weights. Barre (UK: / b ɑː /, US: / b ɑːr / bar) is a form of physical exercise, usually conducted in group classes in gyms or specialty studios. [1]
Vascularity, in bodybuilding, is the condition of having many highly visible, prominent, and often extensively-ramified superficial veins. [1] The skin appears "thin"—sometimes virtually transparent —due to an extreme reduction of subcutaneous fat , allowing for maximum muscle definition.
It is typically the most prominent superficial vein in the human body, and is visible when all other veins are hidden by fat or collapsed during a shock. It arises from the cephalic vein 2.5 cm (one inch) below the lateral epicondyle of the humerus, runs obliquely upward and medially, and empties into the basilic vein 2.5 cm (one inch) above ...
Chronic venous insufficiency (CVI) is a medical condition characterized by blood pooling in the veins, leading to increased pressure and strain on the vein walls. [1] The most common cause of CVI is superficial venous reflux, which often results in the formation of varicose veins, a treatable condition. [2]
The C.I.P. recommends that commencement of rifling begin at 8.97 mm (0.353 in). Bore diameter is given as 12.55 mm (0.494 in) and groove diameter is 12.80 mm (0.504 in). The C.I.P. recommends a five groove barrel contour with each groove having an arc length of 5.33 mm (0.210 in) and a twist rate of one revolution in 406 mm (16.0 in).