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The 6mm BR / 6.2x39mm is a centerfire cartridge created for benchrest shooting. The cartridge is also known as the 6mm Bench Rest or simply 6 BR, and has also developed a following among varmint hunters because of its efficiency. [5] There are two basic variants of very similar dimensions, known as the 6mm BR Remington and the 6mm Norma BR.
The 6XC is a 1000-yard cartridge, comparable to benchrest calibers such as 6x47mm Swiss Match, 6.5×47mm Lapua and 6 mm/22-250; it fits into cartridge class that exceeds the velocities of benchrest calibers such as 6mm BR Remington, 6mm BRX and 6mm Dasher. David Tubb has claimed several wins with the 6XC in NRA High Power National Championships ...
6mm Mongoose (wildcat) 6mm Murph (wildcat) (.244-350 Legend Military Cartridge - SAW replacement) Wild Monkey; 6mm ARC – rifle; 6mm Dasher; 6mm AR (wildcat) 6×45mm – intermediate; 6.5mm Grendel [2] – intermediate; 6.5 Timberwolf (wildcat) 6.8×39mm (.277 Wolverine) [28] [29] – intermediate; 6.8mm Remington SPC [9] – intermediate; 7mm ...
The 6mm AR takes advantage of the wide variety of 6.2 mm (.243 in) caliber bullets. Slim, long bullets with high ballistic coefficient are ideal for energy retention at long ranges. Slim, long bullets with high ballistic coefficient are ideal for energy retention at long ranges.
The standard bullet diameter for 6 mm caliber cartridges is .243 inches (6.2 mm), the same diameter used in the .243 Winchester and 6mm Remington cartridges. To obtain maximum accuracy, bullet weight and form are matched to the rifling twist rate of the barrel. Typically, 68 gr (4.41 g) bullets are used in barrels with twist rates of 1 in 13 ...
Remington even re-branded the cartridge name itself for a fresh start with a 100-grain factory load as the 6mm Remington. While the 6mm Remington cartridge never took over the .24 caliber dual purpose market lead from .243 Winchester, it was successfully sustained in production for nearly six decades. [11]
(or 6.5mm/06) - necked down to accept a 6.5 mm bullet - The 6.5-06 offers ballistic performance between the commercialized 25-06 Remington and 270 Winchester with distinct advantages over both in particular long-range applications through a wide selection of bullets with high ballistic coefficients producing better extended range performance.
The 6mm Musgrave was a rifle cartridge invented by Ben Musgrave and introduced by Musgrave in 1969 [2] [3] The cartridge's design is based on necking down the .303 British , with the original intent of it being a Springbok caliber for hunting on open plains in South Africa's Karoo , Kalahari and Namakwaland .