Here is a history and numerical information on the 6mm Norma BR, as well as comparisons to other types. We believe that the 6mm Norma BR is an excellent round, made with quality components by Norma, who manufactures a stunning sixty-five different calibers and 275 different types of cartridges and various configurations. You'll see that the 6mm Norma is the hottest item in Norma's sales program, made with the technology of the "Diamond Line". The 6mm Norma is an excellent choice for sporting ammunition, which Norma specializes in.
The Norma 6mm BR (BR standing for Bench Rest) which is perfect ammunition for a bench rest rifle. The ammunition itself is a hollow point boat tail cartridge. Introduced in 1996, the design goes back to the 1960's designed as a bench rest cartridge with a 70 grain projectile. Because Norma is based in Europe, the '6mm Norma BR' had to be introduced as a completely different caliber due to the fact that they decided to standardize it with a hundred-grain projectile versus the seventy-grain 6mm BR Remington cartridge.
The throat of the 6mm BR was originally made for light lighter bullets and didn't work well with heavier bullets. So, the throat angle was changed from 1.5 degrees to 3 degrees, which ultimately made the cartridge less sensitive. Additionally, the small primer pocket as well as the small flash hole dramatically improved the performance. Naturally, twist was changed to stabilize the heavier bullets. The 6mm BR gives much less recoil compared to a 308 loaded with a 168 grain bullet, which becomes important when you shoot more than 120 rounds in a match.
Accuracy is about the same, but wind drift is improved by at least twenty percent. The BR has been a favorite amongst many shooters, including international 300 M shooters, and nearly all world records today have been achieved with this cartridge. Also proven as a good choice for long range shooting, the BR has been used to shoot ten-shot groups at under four inches at one thousand yards. Comparing the 6mm BR Norma to .308 Winchesters and Swiss MTF 7.5 mm, the 6mm Norma has the lightest weight, highest velocity, lowest recoil impulse, and second-best wind drift, only .2 centimeters worse than the Swiss MTF at three hundred meters.
The 6mm Norma Diamond Line clearly performs well, and had only one remark: the diameter of the head was somewhat unusual. By modifying the length, they were able to reduce the neck size and thus developed an excellent round. Norma has the reputation of being the manufacturer of premium cases and cartridge components, but it is important to mention that the coating was developed by NECO of the USA. Because this bullet is coated with a patented lubricant and a thin coat of wax, cleaning is seldom a problem. Accuracy tests at a range of three hundred meters reflect, depending on the load, range groups seven to eleven percent smaller. For more information on the Norma 6mm BR see: http://www.6mmbr.com or http:/skyblu.wordpress.com/ or