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Currently (2011) none of the major commercial ammunition manufacturers offer factory loaded 6.5-06 A-Square ammunition. There are smaller companies that custom load the cartridge [2] however, and hand-loading can be accomplished using the proper set of dies and using .25-06 Remington, .270 Winchester, or .30-06 Springfield brass and making the proper modifications to fit the 6.5-06 A-Square ...
.260 Remington SAAMI compliant schematic. All dimensions in inches [millimeters]. 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 .095 in (2.41 mm). The recommended bore diameter is .256 in (6.50 mm) and the groove diameter is .264 in (6.71 mm).
The Norwegian coastal artillery chose to keep their K98k's in their original 8x57 mm chambering, while the Norwegian Army and Norwegian Air Force rechambered their rifles at Kongsberg Våpenfabrikk. .30-06 was chosen, as this was the standard of the U.S. Army at that time, but the barrels were only marked as "7.62".
There are small dimensional differences between the .256 Newton and 6.5-06 later standardized by A-Square: the 256 Newton has an increased body taper, the shoulder is moved back, and has a sharper, 23 degree shoulder while the 6.5-06 has a 17.5 degree shoulder like the parent 30-06 case. SAAMI lists the 6.5-06 A-Square in the Centerfile Rifle ...
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The Sporting Arms and Ammunition Manufacturers' Institute (SAAMI, pronounced "Sammy") is an association of American manufacturers of firearms, ammunition, and components.. SAAMI is an accredited standards developer that publishes several American National Standards that provide safety, reliability, and interchangeability standards for commercial manufacturers of firearms, ammunition, and compo
The 6.5mm Creedmoor (6.5×48mm), [6] designated 6.5 Creedmoor by SAAMI, 6,5 Creedmoor by the C.I.P. [4] is a centerfire rifle cartridge introduced by Hornady in 2007. [7]It was developed by Hornady senior ballistics scientist Dave Emary in partnership with Dennis DeMille, the vice-president of product development at Creedmoor Sports, hence the name.
The 6mm XC was initially developed as a Wildcat cartridge specifically for NRA High Power match shooting by 11-time US National Champion David Tubb. [2] [3] The round originated from chambering a barrel using a .243 Winchester reamer held short, with the case reformed from .22-250. [2]