What bullet diameter is .222 Special?

.222 Special uses a 0.224″ (5.69 mm) diameter bullet.

Is .222 Special still in production?

.222 Special is obsolete; typical availability is collector.

What is .222 Special used for?

.222 Special is primarily used for experimental, military development.

What is .222 Special based on?

.222 Special is derived from the .222 Remington case.

Rifle · Experimental

.222 Special

.222 Remington SpecialCaliber .222 Special

Developmental Remington small-caliber, high-velocity cartridge that became the .223 Remington after naming and standardization changes..

Identity

Introduced: 1957
Type: Rifle
Origin: United States
Inventor: Remington / U.S. SCHV development team
Manufacturer: Remington
Standard: Experimental
Status: Obsolete
Availability: Collector

Dimensions

Bullet ⌀: 0.224″
Primer: Small Rifle
Case type: Rimless

Ballistics

Published velocity/energy data isn't available for .222 Special — an obsolete/collector cartridge. Parent case: .222 Remington.

Reloading cost

Estimate your cost per round and how it compares to factory. Inputs are yours — nothing is stored.

Powder $/lbCharge (gr)Bullet $/eaPrimer $/eaBrass reusesBrass $/ea

Cost estimate only — not load data. Charge weight is your input; follow published manuals for safe charges.

Lineage

Immediate parent

.222 Remington

Family TreeOpen .222 Special in the interactive cartridge family tree↗

Connected reference

FirearmsFirearms in .222 Special↗

History

Created during late-1950s SCHV rifle development; an essential bridge between the .222 Remington lineage and the commercial .223 Remington.

FAQs

What bullet diameter is .222 Special?: .222 Special uses a 0.224″ (5.69 mm) diameter bullet.
Is .222 Special still in production?: .222 Special is obsolete; typical availability is collector.
What is .222 Special used for?: .222 Special is primarily used for experimental, military development.
What is .222 Special based on?: .222 Special is derived from the .222 Remington case.

Data & sources. Specs compiled from the Lindcott Armory reference; the trajectory is modeled (point-mass), not measured. Spotted an error? Report it →