MIAMI - NOVEMBER 04: Raul Valdez gathers a handful of .223-caliber cartridges, measuring for boxes for shipping at Stone Hart Ammo Manufacturing Company November 4, 2009 in Miami, Florida. Ammunition ...

The .221 Remington Fireball was originally introduced in the early 1960s as a handgun cartridge for the futuristic XP-100 handgun. Apparently, the name was derived from the tremendous muzzle flash ...

As any good reloading manual will tell you, the first successful (commercially at least) attempt to neck the .221 Fireball case down to .17 caliber was the .17 Mach IV. This cartridge was introduced ...

** When you buy products through the links on our site, we may earn a commission that supports NRA's mission to protect, preserve and defend the Second Amendment. ** The 6.8x43 mm Rem. Special Purpose ...