6mm BR [SEP] country of origin
. Remington continues to offer the 6mm BR Remington in the 40-X series rifles. The Remington version of this cartridge is now considered to be obsolete.
Cartridge history 6mm Norma BR.
In 1996 Norma of Sweden introduced the 6mm Norma BR which was dimensionally similar to the 6mm BR Remington.
However the chamber of the Norma version provided a longer throat making allowances for the seating of very low drag (VLD) bullets. It was designed from the beginning to optimize accuracy, barrel life, and case
6mm BR Remington and the .22 BR Remington cartridges. These cartridges in turn trace their origin to .308 Winchester via the .308×1.5-inch Barnes cartridge. The 7mm BR was designed by merely necking up the pre-existing 6mm BR Remington to accept a .28 caliber (7 mm) bullet. The cartridge is capable of developing with a bullet or with a bullet in a barrel.
As a hunting cartridge it is adequate for smaller deer species and ranges under . With lighter bullets, this cartridge makes an excellent varmint