.17 Mach IV

Rifle cartridge .17 Mach IV 17MachIV.png 300px Left to right: .17 HMR, .17 Mach IV, .243 Win United States Rifle Vern O Brien 1962 .221 Remington Fireball rimless bottlenecked .172 .206 .361 .378 .378 .045 1.400 1.830 1 in 10 in mm Small Rifle 25 HP 3680 797 25 HP 3890 849 6mmBRhttps://www.6mmbr.com/17wildcats.html 17 Caliber Wildcats www.6mmbr.com Hodgdonhttp://data.hodgdon.com/cartridge_load.asp Hodgdon Online Reloading Data 2008-06-19 https://web.archive.org/web/20071111143616/http://data.hodgdon.com/cartridge_load.asp 2007-11-11 dead The .17 Mach IV / 4.4x35mm is a wildcat centerfire rifle cartridge, based on the .221 Remington Fireball case, necked down to fire a 0.172 in mm 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.Barnes, Frank C., Cartridges of the World, 7th Edition, p171 The name, Mach IV, comes from the claim that the bullets can reach 4000 ft/s m/s Mach on.http://www.saubier.com/smallcaliber/which17.html Which .17? Jim Saubier www.saubier.com Due to the relatively small case capacity, even small variations in powder of 0.5 gr g on can lead to the difference between a safe and dangerously over pressure load. Aftermarket barrels for the XP-100 pistol were sometimes marked ".17 Mach III" due to the lower velocity produced by the shorter barrel.Wildcat Cartridges: .17 Mach IV Column by Layne Simpson in Handloader Magazine The .17 Mach IV became very popular with varmint hunters, so much so that in 2007, Remington introduced its own very similar version, the .17 Remington Fireball. See also .17 Remington Fireball .221 Remington Fireball 4 mm caliber List of rifle cartridges References 2 Category:Pistol and rifle cartridges Category:Wildcat cartridges