.260 Remington

This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. Find sources: ".260 Remington" – news · newspapers · books · scholar · JSTOR (January 2012) (Learn how and when to remove this message)

.260 Remington
.260 Remington cartridge with a 120 grain Remington Core-Lokt bullet.
Type	Rifle
Place of origin	United States
Production history
Manufacturer	Remington Arms Company
Produced	1997
Specifications
Parent case	.308 Winchester
Case type	Rimless, bottleneck
Bullet diameter	.264 in (6.7 mm)
Neck diameter	.2969 in (7.54 mm)
Shoulder diameter	.4539 in (11.53 mm)
Base diameter	.4705 in (11.95 mm)
Rim diameter	.4728 in (12.01 mm)
Rim thickness	.0539 in (1.37 mm)
Case length	2.035 in (51.7 mm)
Overall length	2.800 in (71.1 mm)
Case capacity	53.5 gr H2O (3.47 cm3)
Rifling twist	1 in 9 in (229 mm)
Primer type	Large rifle
Maximum pressure (C.I.P.)	60,191 psi (415.00 MPa)
Maximum pressure (SAAMI)	60,000 psi (410 MPa)
Ballistic performance
Bullet mass/type Velocity Energy 120 gr (7.8 g) AccuTip BT 2,890 ft/s (880 m/s) 2,226 ft⋅lbf (3,018 J) 140 gr (9.1 g) Soft Point 2,750 ft/s (840 m/s) 2,351 ft⋅lbf (3,188 J)
Source(s): Remington Arms Co. ballistics table

The .260 Remington (also known as 6.5-08 A-Square) cartridge was introduced by Remington in 1997. Many wildcat cartridges based on the .308 Winchester case had existed for years before Remington standardized this round.

Because 6.5 mm (.264") bullets have relatively high ballistic coefficients, the .260 Remington has seen success in rifle competition including bench rest, metallic silhouette, and long range. It is capable of duplicating the trajectory of the .300 Winchester Magnum, while generating significantly lower recoil.^[1] Also, converting a rifle chambered for the .308 Winchester (or any of its offspring, such as the .243 Winchester, 7mm-08 Remington, .358 Winchester or .338 Federal) to .260 Remington generally requires little more than a simple barrel change.