.22 Remington Jet

.22 Remington Jet
.22 Remington Jet (center) with .22 Hornet (left) and .223 Rem (right).
Type	Revolver and rifle
Place of origin	US
Production history
Designer	Remington and Smith & Wesson
Designed	1961
Produced	1961–present[1]
Specifications
Case type	Rimmed, bottleneck
Bullet diameter	.222 in (5.6 mm)
Neck diameter	.247 in (6.3 mm)
Shoulder diameter	.350 in (8.9 mm)
Base diameter	.376 in (9.6 mm)
Rim diameter	.440 in (11.2 mm)
Case length	1.28 in (33 mm)
Overall length	1.58 in (40 mm)
Rifling twist	1:10
Primer type	Small pistol
Maximum CUP	40,000 [2] CUP
Ballistic performance
Bullet mass/type Velocity Energy 40 gr (3 g) 1,710 ft/s (520 m/s) 261 ft⋅lbf (354 J) 40 gr (3 g) 1,700 ft/s (520 m/s) 258 ft⋅lbf (350 J) 45 gr (3 g) 1,630 ft/s (500 m/s) 267 ft⋅lbf (362 J)
Test barrel length: 81⁄2 in (22 cm) Source(s): Barnes & Amber 1972

The .22 Remington Jet (5.6x33mmR)^[3] is a .22 in (5.6mm) American centerfire revolver and rifle cartridge.^[3] The round is known in the US as .22 Jet, .22 Center Fire Magnum/.22 CFM or .22 Rem Jet.

Developed jointly by Remington and Smith & Wesson, it was to be used in the Model 53 revolver, which first appeared late in 1961.^[3] While it traced its origins to potent wildcats such as the .224 Harvey Kay-Chuk,^[4] which ultimately derive from the .22 Hornet,^[4] it was a bottlenecked cartridge based upon the .357 Magnum case necked down to a .22 caliber bullet, with an unusually long tapered shoulder.

By 1972, the Model 53 remained the only revolver chambered for it,^[3] while Marlin in 1972 was planning a lever rifle in .22 Jet.^[3] The .22 Jet was also a factory chambering for the Thompson/Center Contender and the design allowed for it to reach its full potential, having no cylinder gap and no case setback.

The .22 Jet was designed as a flat-shooting hunting round for handguns, and it is suitable for handgun hunting of varmints and medium game out to 100 yd (90 m).^[3] The 2460 ft/s (750 m/s) and 535 ft-lbf (725 J) claimed for factory test loads did not prove out in service weapons.^[3]

• .22 Hornet
• .22 Spitfire
• .221 Remington Fireball
• List of cartridges by caliber
• 5mm caliber

• Barnes, Frank C., ed. by John T. Amber. ".22 Remington Jet", in Cartridges of the World, pp. 148, & 177. Northfield, IL: DBI Books, 1972. ISBN 0-695-80326-3.
• ______ & _____. ".224 Harvey Kay-Chuk", in Cartridges of the World, pp. 131. Northfield, IL: DBI Books, 1972. ISBN 0-695-80326-3.