6mm ARC

Overview

The 2706mm WinchesterAdvanced ShortRifle MagnumCartridge (6×38mm), or 2706mm WSMARC for short, is a short,6 magnummm (.243) caliber intermediate rifle cartridge createddesigned byas neckinga downlow-recoil, high-accuracy long-range cartridge, designed for use in the .300AR-15 Winchesterplatform Shortat Magnumrequest and fitting it withof a .277special caliberforces bullet. The correct nameunit for theits cartridge,multipurpose iscombat 270rifle WSM,program.

The a6mm decimal point. ItARC is a membergreat ofall theround Winchestercartridge, Shortoffering Magnumgreat family of cartridges.

The 270 WSM is an improvement over the older 270 Winchester providing higher velocity with bullets of the same weight,ballistics and thussimilar (25rnd) magazine capacity to 5.56 but at a flatterslightly trajectoryincreased andweight. more energy. Velocities tend to be about 250 ft/s (76 m/s) faster, in a cartridge that is shorter and can therefore be used in a shorter action resulting in a more compact rifle if desired.

Its prefered use case is hunting and long range precision shooting, it has seen little to no military adoption beyond small use cases in special mission units. As such there are no armor penetrating or specialist projectiles, with only factory match and hunting loads available

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