6mm XC / 6.17x48mm (also known as 6XC) is a

rifle A rifle is a long gun, long-barreled firearm designed for accurate shooting and higher stopping power, with a gun barrel, barrel that has a helical or spiralling pattern of grooves (rifling) cut into the bore wall. In keeping with their focus o ...

cartridge, similar to the 6x47mm Swiss Match.

History

The 6mm XC was initially developed as a

Wildcat cartridge A wildcat cartridge, often shortened to wildcat, is a custom-made cartridge (weaponry), cartridge for which ammunition and/or firearms are not mass-produced. These cartridges are often created as experimental variants to optimize a certain ballis ...

specifically for NRA High Power match shooting by 11-time US National Champion

David Tubb David (; , "beloved one") was a king of ancient Israel and Judah and the third king of the United Monarchy, according to the Hebrew Bible and Old Testament. The Tel Dan stele, an Aramaic-inscribed stone erected by a king of Aram-Damas ...

. The round originated from chambering a barrel using a .243 Winchester reamer held short, with the case reformed from .22-250. The round is optimised for bullets heavier than 100

grains A grain is a small, hard, dry fruit ( caryopsis) – with or without an attached hull layer – harvested for human or animal consumption. A grain crop is a grain-producing plant. The two main types of commercial grain crops are cereals and le ...

to improve performance at long ranges - .243Win typically uses bullets lighter than 100 grains. It is touted as being one of the most accurate long-range 6 mm rounds in the world that is designed for repeating rifles. The 6XC is now a CIP standardized case. The origin is listed as Sweden since Norma standardised the case. Factory brass is available from Norma and Peterson.

Performance

The 6XC is a 1000-yard cartridge, comparable to

benchrest Benchrest shooting is a shooting sport discipline in which accuracy and precision, high-precision rifles are rested on a table or countertop, benchrather than being carried in the shooter's handswhile shooting at shooting target, paper or steel ...

calibers such as 6x47mm Swiss Match,

6.5×47mm Lapua The 6.5×47mm Lapua (designated as the 6,5 × 47 Lapua by the C.I.P.) is a smokeless powder rimless bottlenecked rifle cartridge that was developed specifically for competition shooting by ammunition maker Nammo Lapua and the Swiss rifle m ...

and 6 mm/22-250; it fits into cartridge class that exceeds the velocities of benchrest calibers such as

6mm BR Remington 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. There are tw ...

, 6mm BRX and

6mm Dasher 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. There are tw ...

. David Tubb has claimed several wins with the 6XC in NRA High Power National Championships and a number of NRA Long Range championship events (1000 yard events).

Muzzle velocity

* 7.45 g (115 gr) Hollow Point Boat Tail (HPBT): 3,000 ft/s (910 m/s)

References

External links

6XC at 6mmBR.comDavid Tubb on Rifling6mm XC Brass Measurement Data
Pistol and rifle cartridges Wildcat cartridges {{ammo-stub

History

Performance

Muzzle velocity

See also

References

External links