What is a 6mm Norma BR? What is a 6mm Norma BR used for?

What is a 6mm Norma BR?
What is a 6mm Norma BR used for?

Historical Notes:

In February 1996, Norma introduced this “new” cartridge. While
case dimensions are identical to the 6mm BR Remington,
chambering specifications differ. Remington perceived this
cartridge as a traditional bench-rest number. Therefore, it designed
chambering specifications around bullets of about 70 grains.
Conversely, with considerable prodding from the late Roger
Johnston, Norma recognized the long-range target potential of this
basic case. That company standardized a chambering specification
appropriate for very low drag (VLD) bullets exceeding 100 grains.
Therefore, the Norma chamber has a much longer neck. While
there are no case differences, CIP (the European counterpart to
SAAMI) requires a new designation for any cartridge or chambering
differing in any way from any previous version. Therefore, Norma
was required to apply a new name.

What is a 6mm Norma BR?
What is a 6mm Norma BR used for?

General Comments:

While the 6mm BR Remington has failed to become a world-beater
in traditional bench rest, with heavy VLD bullets, Norma’s version
has established itself as a force to be reckoned with in the long range
game. It is also a superior long-range varmiting choice.
Given a 28-inch barrel and loaded with any of the better 95- to 115-
grain VLD moly-plated bullets, this cartridge can achieve sufficient
velocity for 1,000-yard bench rest shooting. Owing to the high BCs
of these bullets, 1,000-yard retained velocity is surprisingly high––
often exceeding 1400 fps.

What is a 6mm Norma BR?
What is a 6mm Norma BR used for?

For cartridges of this genre, such loads generate unusually light
recoil, which contributes to precise shooting. However, unless
conditions are unusually good, those using larger-bored rifles
usually fare better. While those rifles generate more recoil, which
effectively reduces intrinsic accuracy, the longer bullets exhibit less
wind drift and, therefore, reduce the error associated with
imperfections in the shooter’s ability to properly dope the wind.

What is a 6mm Norma BR?
What is a 6mm Norma BR used for?

Reference: Retrieved from 14th edition Cartridges of the World (a complete illustrates reference for more than 1500 cartridges by Franks Barnes edited by W. Todd Woodard 12/01/2014, p263