The .22 ILARCO / 5.7x24mmRF, also known as the .22 Winchester American Magnum Special, .22 Winchester Short Magnum Rimfire, or .22 American, was a rimfire cartridge designed in 1987 for the

American-180 The American-180 is a submachine gun developed in the 1960s which fires the .22 Long Rifle or .22 ILARCO cartridges from a Magazine (firearms)#Pan, pan magazine. The concept began with the Casull Model 290 that used a flat pan magazine similar to ...

rimfire submachine gun. At the time the cartridge was created, the design of the American-180 had been taken over by the Illinois Arms Company, Inc., hence the ILARCO name.22 ilarco. International Ammunition Association Web Forum. (2015, October 18). https://forum.cartridgecollectors.org/t/22-ilarco/16730/21

History

Sometime after the Illinois Arms Company, Inc. (ILARCO) purchased the rights to the American-180 they determined a more powerful cartridge would be appropriate, which resulted in the creation of the .22 ILARCO. The new cartridge was designed so that a simple change of barrel was all that was required to switch between standard .22 Long Rifle, for which the gun was designed, and the new cartridge.

Dimensions and loading

The .22 ILARCO uses a shorter version of the .22 Winchester Magnum Rimfire case, which use the same projectile as the original .22 Winchester Magnum Rimfire cartridge.

References

{{Reflist, 30em Pistol and rifle cartridges Rimfire cartridges Weapons and ammunition introduced in 1987

History

Dimensions and loading

See also

References