.22 Eargesplitten Loudenboomer

The .22 Eargesplitten Loudenboomer, designed by P.O. Ackley. Based on the .378 Weatherby Magnum, necked down to accept .224 caliber bullets. Next to a .30-06 Springfield for comparison.

The .22 Eargesplitten Loudenboomer was a Wildcat Cartridge developed by P.O. Ackley in the 1960's for Bob Hutton, a member of Guns and Ammo magazine's technical department. The intent of the cartridge was primarily breaking past the 5,000 feet per second barrier that tends to exist as a limit to modern smokeless powder.