American Safety Razor Company in a management buyout. Energizer bought the privately held American Safety Razor in 2011, when it filed for bankruptcy. In 2015, Energizer spun off the personal care division as Edgewell Personal Care. Edgewell announced the sale of its Personna Industrial Division to an investment group, which renamed it AccuTec Blades. American Safety Razor Company "For the company of the same name that was founded in 1901 and renamed as the Gillette Safety Razor Company, see Gillette (brand)" American Safety Razor Company is a personal care brand founded in the early 20th century (1906) by a merging of the Gem Cutlery
.17 Mach IV .17 Mach IV The .17 Mach IV is a wildcat centerfire rifle cartridge, based on the .221 Remington Fireball case, necked down to fire a .172 bullet. The cartridge was introduced in 1962 by Vern O’Brien. The cartridge offered an easy case conversion and good ballistics, but could not compete against the .17 Remington. The name, Mach IV, comes from the claim that the bullets can reach 4,000 ft/s. Due to the relatively small case capacity, even small variations in powder of can lead to the difference between a safe and dangerously over pressure load. The .17 Mach IV became