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The cartridge is primarily used in Rock Island Armory M1911 pistols and the M22 TCM bolt-action rifle. Initially known as the .22 Micro-Mag, the .22 TCM is conceptually similar to other bottlenecked pistol cartridges, such as the 7.62×25mm Tokarev and the FN 5.7×28mm.
Armscor introduced a new proprietary caliber named the .22 TCM (Tuason Craig Micromag) based on the 1911 pistol. The cartridge is essentially a 5.56×45mm NATO cartridge shortened to 1.265 in. total length with a 40-grain jacketed hollow point bullet. Its main characteristics are its high velocity and low recoil, allowing for repeated accurate ...
The Thompson/Center Ugalde, or TCU family of wildcat cartridges, was developed by Wes Ugalde of Fallon, Nevada, by necking up .223 Remington brass to accept larger bullets. The cartridges were developed for the Thompson Center Arms Contender single shot pistol, and are widely used in handgun metallic silhouette competition and handgun hunting.
.22 Savage Hi-Power (5.6×52mmR), a cartridge introduced by Savage in 1912 for use in the Savage Model 99 rifle.22 TCM (22 Micro-Mag), a shortened .223 Remington case designed to load into standard 9mm pistol magazines.22 Winchester Centerfire (WCF), a cartridge introduced in 1885 for use in a Winchester single-shot rifle.22-250 Remington, a ...
The .22 Spitfire is an American wildcat rifle cartridge developed by Col. Melvin M. Johnson. It was originally named the MMJ 5.7mm [ 1 ] by its designer and is also known in the U.S. as the 5.7mm Johnson , the Johnson MMJ 5.7mm Spitfire , and the .22 Johnson , (or 5.7×33mm internationally).
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Currently the info box shows 40 gr (3 g) Bullet weight, 2,800 ft/s (850 m/s) Velocity, 392 ft·lbf (531 J) Energy Using my energy calculator, 40gr bullet at 2800 fps velocity gives 696 ft-lbs energy, not 392 ft/lbs. Working backwards, 40gr bullet with 392 ft-lbs energy would need about 2100 fps velocity.
All of the WSM cartridges are inspired on the .404 Jeffery non-belted magnum cartridge which is shortened to fit a short rifle action (such as a .308 Winchester). [1] It was developed by Rick Jamison in 1997-1998 as proven in a 2005 lawsuit Jamison vs. Olin Corporation-Winchester division. [2] Jamison was given 7 patents on the cartridge design.