All sizes in millimeters (mm) plus Imperial (inches).Īmericans would define the shoulder angle at alpha/2 = 20 degrees. SAAMI also recommends a pressure of 60,000 psi (413.69 MPa) C.I.P. SAAMI recommends that rifling commence at. 256 in (6.50 mm) and the groove diameter is. SAAMI recommends a barrel with a 6 groove contour and a twist rate of one revolution every 9 in (229 mm) with each groove having a width of. SAAMI dimensions for the cartridge were issued on January 29, 1999, when the Remington's submission was accepted. While there are minor dimensional differences between dimensions provided by both organizations, these dimensional differences mostly fall within the tolerances allowed by the other organization, though C.I.P. have provided design specifications for the. 260 Remington has a case capacity of about 3.47 ml (53.5 grains) H 2O.īoth SAAMI and C.I.P. As the cartridge follows a modern design, it has little taper which allowed its parent cartridge to feed reliably through auto-loading rifles such as the M14, FN FAL and the H&K G3. 264 caliber bullet with no further changes made to the case. 308 Winchester case as its parent cartridge which is simply necked down to accept a. 260 Remington by Sgt Sherri Gallagher to win the 2010 NRA High Power National Championship has sparked a resurgence in the round, and Lapua announced at the 2011 SHOT show that it would be manufacturing. However, Remington continues to manufacture several types of. 260 Remington for 2011 as it has discontinued such rifles as the Model 700 CDL and the Model Seven (including the youth model) in. 260 Remington appeared to be following this North American trend, with Remington only producing the Model Seven Synthetic in the. 264 Winchester Magnum and later the 6.5mm Remington Magnum, North American cartridges in this caliber have been largely failures. The 6.5×54mm Mannlicher–Schönauer, 6.5×55mm, 6.5×57 Mauser, and 6.5-284 Norma have loyal followings in Europe. 264 (6.5 mm) caliber has historically been commercially unsuccessful in North America but has been one of the mainstays in Europe especially in the Scandinavian countries. Standardizing the cartridge addressed the issues owners experienced when it was a wildcat. A cartridge formed for a specific rifle may or may not successfully chamber or worse may reach dangerous pressures in another. 308 Winchester influenced the neck thickness and therefore the dimensions of the cartridge. Furthermore, depending on whether one chose to form the case from. Since the 6.5-08 was a wildcat cartridge, variations existed between cartridge chambers depending on the reamer used to cut the chamber. 308 Winchester, and to a lesser degree the 7mm-08 Remington was bullets with excellent ballistic coefficients and sectional densities. Since the parent cartridges were readily available for low cost, the 6.5-08 was often an economical alternative to cartridges such as the 6.5×55mm. 260 cases by necking down the 7mm-08 Remington or necking up the. Handloaders and wildcatters can easily form. The 6.5-08 cartridge was created simply by necking down the. 260 Remington instead of 6.5–08 A-Square. When the dust settled, the 6.5-08 would be called the. Remington filed similar papers with SAAMI to do the same a few months later. LTC Arthur Alphin and his company A-Square LLC submitted the first proposal and drawings to SAAMI for the standardization of the cartridge. However, Remington was not the first to attempt to standardize the cartridge.
260 Remington started its life as a wildcat cartridge called the 6.5-08, and was eventually released as a commercial cartridge by Remington. Remington has had a track record of adopting successful wildcat cartridges into the Remington fold by offering rifles and ammunition and at times attaching their name to the cartridge. 260 Remington generally requires little more than a simple barrel change. 308 Winchester (or any of its offspring, such as the.
Also, converting a rifle chambered for the. 300 Winchester Magnum, while generating significantly lower recoil. It is capable of duplicating the trajectory of the. 260 Remington has seen success in rifle competition including bench rest, metallic silhouette, and long range. 308 Winchester case had existed for years before Remington standardized this round.īecause 6.5 mm (.264") bullets have relatively high ballistic coefficients, the. 260 Remington (also known as 6.5-08 A-Square) cartridge was introduced by Remington in 1997. 260 Remington cartridge with a 120 grain Remington Core-Lokt bullet.
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