.22 Eargesplitten Loudenboomer

.22 Eargesplitten Loudenboomer is a wildcat rifle cartridge.

.22 Eargesplitten Loudenboomer
TypeRifle cartridge
Place of originUnited States
Service history
Used bydr.
Production history
DesignerP.O. Ackley
Designed1960s
Specifications
Parent case.378 Weatherby Magnum
Case typeFlask barrel
Bullet diameter.224" - 5.56mm
Rim diameter.579 in (14.7 mm)
Ballistic performance
Bullet mass/type Velocity Energy
50 gr (3 g) Machine gunpowder 106gr. 4,160 ft/s (1,270 m/s) 1,921 ft⋅lbf (2,605 J)
50 gr (3 g) H570 100gr. 4,170 ft/s (1,270 m/s) 1,930 ft⋅lbf (2,620 J)
50 gr (3 g) H570 102gr. 4,390 ft/s (1,340 m/s) 2,139 ft⋅lbf (2,900 J)
50 gr (3 g) H570 105gr. 4,600 ft/s (1,400 m/s) 2,349 ft⋅lbf (3,185 J)
Source(s): quoted "Guns and Ammo Magazine", B. Hutton

This humorously named cartridge was developed in the 1960s by P.O. Ackley for Bob Hutton of Guns & Ammo magazine, and was intended solely to exceed 5,000 ft/s (1,500 m/s) muzzle velocity. Ackley's loads only managed 4,600 ft/s (1,400 m/s)(Mach 4.2), firing a 50-grain (3.2 g) bullet. Based on a .378 Weatherby Magnum case, the case is impractically over-capacity for the bore diameter, and so the cartridge remains a curiosity. The advent of new slower-burning smokeless powders may have changed the equation.[1]

See also

References
  1. Ackley, P.O. (1927) [1962]. Handbook for Shooters & Reloaders. vol I (12th Printing ed.). Salt Lake City, Utah: Plaza Publishing. p. 442. ISBN 978-99929-4-881-1. Archived from the original on 2017-07-08. Retrieved 2008-02-13.
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