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  2. Radio-controlled boat - Wikipedia

    en.wikipedia.org/wiki/Radio-controlled_boat

    Tethered racing and free-running craft were popular prior to the advent of cheap radio control. The speeds of tethered racing vehicles are higher than 160 mph for boats and 230 mph for cars, but these craft bear little resemblance to real-world vehicles, and could not obtain anywhere near those speeds if converted to radio control.

  3. .38 Special - Wikipedia

    en.wikipedia.org/wiki/.38_Special

    Smith & Wesson M&P in .38 Special produced in 1899 A .38 Special Jacketed Soft Point round Air Force issue Smith & Wesson Model 15-4 in .38 Special. In 1930, Smith & Wesson introduced a large-frame 38 Special revolver with a 5-inch barrel and fixed sights intended for police use, the Smith & Wesson 38/44 Heavy Duty.

  4. Smith & Wesson .38/44 - Wikipedia

    en.wikipedia.org/wiki/Smith_&_Wesson_.38/44

    The media attention gathered by the .38/44 and its ammunition encouraged Smith & Wesson to develop the longer .357 Magnum cartridge in 1935. The .38/44 was an option for purchasers unwilling to pay the premium pricing of the new .357 Magnum revolvers. The .38/44 revolvers were available with either a blued or nickel-plated finish.

  5. .38 Long Colt - Wikipedia

    en.wikipedia.org/wiki/.38_Long_Colt

    The .38 Long Colt's predecessor, the .38 Short Colt, used a heeled bullet of 130 grains (8.4 g) at a nominal 770 ft/s (230 m/s), producing 165 ft⋅lbf (224 J) muzzle energy. The cylindrical "shank" or "bearing surface" of the bullet, just in front of the cartridge case mouth, was .374 or .375 in (9.50 or 9.53 mm) in diameter, the same as the ...

  6. .38 rimfire - Wikipedia

    en.wikipedia.org/wiki/.38_rimfire

    The .38 rimfire cartridge was a common round for many antique revolvers and rifles from the 1870s to the early 1900s. It was a common self-defense round for a small revolver that was often kept in a vest pocket through to the 1890s.

  7. .38/.45 Clerke - Wikipedia

    en.wikipedia.org/wiki/.38/.45_Clerke

    It is essentially a .45 ACP case, necked down to .357, resulting in a cartridge similar in form to the earlier 7.65×21mm Parabellum and 7.63×25mm Mauser cartridges. It was created to be a low recoil target cartridge that would function reliably with multiple bullet types, FMJ to cast lead wadcutters without the feeding problems that straight walled pistol rounds sometimes exhibit. [2]

  8. .38 Short Colt - Wikipedia

    en.wikipedia.org/wiki/.38_Short_Colt

    The .38 Short Colt, also known as .38 SC, is a heeled bullet cartridge intended for metallic cartridge conversions of the cap and ball Colt 1851 Navy Revolver from the American Civil War era. [ 1 ] Later, this cartridge was fitted with a 0.358-inch (9.1 mm) diameter inside-lubricated bullet in the 125–135 grains (8.1–8.7 g) range.

  9. Power factor (shooting sports) - Wikipedia

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

    The .38 Super caliber became popular in the early 1980s, and has continued to be popular in the open division after its introduction in the 1993 season. In the open division, IPSC has a lower power factor requirement of 160 kgr·ft/s for major, while the other IPSC handgun divisions require a power factor of 170 kgr·ft/s for major.