6mm Remington

6mm Remington
Type	Rifle
Place of origin	USA
Production history
Designer	Fred Huntington & Mike Walker
Designed	1955
Manufacturer	Remington
Variants	.244 Remington
Specifications
Parent case	7×57mm Mauser
Case type	Rimless, bottleneck
Bullet diameter	.2435 in (6.18 mm)
Neck diameter	.276 in (7.0 mm)
Shoulder diameter	.429 in (10.9 mm)
Base diameter	.471 in (12.0 mm)
Rim diameter	.473 in (12.0 mm)
Case length	2.233 in (56.7 mm)
Overall length	2.825 in (71.8 mm)
Rifling twist	1-9"
Primer type	Large rifle
Ballistic performance
Bullet mass/type Velocity Energy 55 gr (4 g) BT 4,031 ft/s (1,229 m/s) 1,985 ft⋅lbf (2,691 J) 65 gr (4 g) VMax 3,739 ft/s (1,140 m/s) 2,018 ft⋅lbf (2,736 J) 80 gr (5 g) SP 3,485 ft/s (1,062 m/s) 2,158 ft⋅lbf (2,926 J) 95 gr (6 g) BT 3,156 ft/s (962 m/s) 2,102 ft⋅lbf (2,850 J) 105 gr (7 g) RNSP 2,969 ft/s (905 m/s) 2,056 ft⋅lbf (2,788 J)
Test barrel length: 24" Source(s): Accurate Powder[1]

The 6mm Remington rifle cartridge, originally introduced in 1955 by Remington Arms Company as the .244 Remington, is based on a necked down .257 Roberts cartridge (itself a necked-down 7×57mm Mauser) using a .24/6mm bullet. Known for a combination of high velocity, long range, flat trajectory, and accuracy, it is suitable as a dual use hunting cartridge for both medium-sized big game and varmints. When used in the less common earlier slow twist barrels, it offers exceptional range for varmint applications. While not as commercially popular today as the .243 Winchester, the 6mm Remington enjoys a slight ballistic advantage and continues to be popular with handloaders and custom rifle builders.