6.5mm Remington Magnum
American Rifle Cartridges
The  6.5 Remington Magnum was introduced in 1966 for the Remington Model 600 Bolt-Action
Carbine, Remington discontinued the carbines in 1971.
The cartridge was produced by necking down the 350 Remington Magnum, which was developed in
1965 for the same Model 600 carbine.
The cartridge produced more energy and velocity at the time then most 6.5 cartridges.
Remington has not made this item in a few years at the time of this writing.
Above picture on right side of picture.
Left  is 350 Remington Magnum,
Right is 6.5mm Remington Magnum