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  2. Marlin Model XT-22 - Wikipedia

    en.wikipedia.org/wiki/Marlin_Model_XT-22

    The Marlin Model XT is a series of rimfire bolt-action rifles produced by Marlin Firearms, first saw production in 2011.The rifle comes in several different models in both the .17 (XT-17s) and .22 calibers (XT-22s), with either a detachable box magazine or a fixed tubular magazine, [1] and with various stocks and finishes.

  3. Speeds and feeds - Wikipedia

    en.wikipedia.org/wiki/Speeds_and_feeds

    Cutting speed may be defined as the rate at the workpiece surface, irrespective of the machining operation used. A cutting speed for mild steel of 100 ft/min is the same whether it is the speed of the cutter passing over the workpiece, such as in a turning operation, or the speed of the cutter moving past a workpiece, such as in a milling operation.

  4. Marlin Firearms - Wikipedia

    en.wikipedia.org/wiki/Marlin_Firearms

    Marlin Model 25M, .22 WMR bolt-action rifle; Marlin Model 25MG, .22 WMR, smooth bore, bolt-action shotgun. It was designed and marketed as a "Garden Gun" Marlin Model 25N, now the Model 925, a .22 Short, .22 Long, and .22 Long Rifle bolt-action rifle; Marlin Model XT-22 available in long rifle and .22 WMR, There are 15 variations of this rifle ...

  5. 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.

  6. 1951 USAF resolution test chart - Wikipedia

    en.wikipedia.org/wiki/1951_USAF_resolution_test...

    These 54 elements are provided in a standardized series of logarithmic steps in the spatial frequency range from 0.250 to 912.3 line pairs per millimeter (lp/mm). The series of elements spans the range of resolution of the unaided eye, down to the diffraction limits of conventional light microscopy .

  7. 10,000 Steps Is A Myth. Here's What Science Says You Should ...

    www.aol.com/10-000-steps-myth-heres-110000541.html

    The risk continued to drop with more steps, but then plateaued at about 7,500 steps. The optimal step count for people younger than 60, though, was about 8,000 to 10,000 a day, per a separate study.

  8. 10,000 Steps Per Day Is A Myth—So How Much Should You Really ...

    www.aol.com/10-000-steps-per-day-120000168.html

    This might mean walking for about 22 minutes every single day or for 30 minutes, three days a week. ... Aim for: anywhere between 2,000 and 8,000 steps per day—which is between one and four ...

  9. .22 caliber - Wikipedia

    en.wikipedia.org/wiki/.22_caliber

    .22 caliber, or 5.6 mm, refers to a common firearms bore diameter of 0.22 inch (5.6 mm) in both rimfire and centerfire cartridges. Cartridges in this caliber include the very widely used .22 Long Rifle and .223 Remington/5.56×45mm NATO. .22 inch is also a popular air gun pellet caliber, second only to the ubiquitous .177 caliber.