The 6mm Remington is based on the 7x57mm case necked down to .243 caliber and the shoulder angle increased by about 6 degrees. Remington introduced this cartridge first in 1955 under a different name, the 244 Remington. In 1963 Remington reintroduced this cartridge as the now popular 6mm Remington.
The 6mm Remington never caught on in 1955 as it was introduced in Remingtons model 722 varmint rifle with a 1 in 12" twist barrel, while this gave excellent accuracy and ballistics with lighter bullets in the 70 grain weight range it did not stabalize heavier bullts in the 90 - 100 grain weight range. Remington dropped the 244 Remington and reintroduced it in 1963 as the 6mm Remington chambered in a Model 700 rifle with a 1 in 9" twist rate in the barrel, the change in twist rate added the versatility that was needed and heavier bullets would now stabalize.
The 6mm Remington is a good dual purpose cartridge, loaded with lighter bullets it is extremely effective on varmints, able to send a 75 grain bullet out the barrel with a velocity of 3,500 fps. the ballistics are excellent out to the 400 yard mark, loaded with 90 grain bullets at 3,300 fps. and you have an excellent deer and antelope round good for 300 yards.
The 6mm Remington is a moderate recoiling round which is comfortable enough for almost anyone to shoot. For a beginner just getting into the high power rifle sports the 6mm Remington cartridge has a lot to offer in ballistics and light recoil and is highly recommended. Also for anyone that is recoil sensitive this is a great cartridge.
6mm Remington Barrel Specifications.
Common Barrel Twist Rate - 1/9 (244 Remington) 1/12
Bore Groove Diameter - .243"
6mm Remington Reloading Specifications.
Bullet Diameter - .243"
Maximum Case Length - 2.233"
Trimmed Case Length - 2.225"
Primer Size - Large Rifle
6mm Remington Loading Data Hints.
The 6mm Remington will give excellent bullet performance using 90 - 100 grain bullets with slower burning powders like i.m.r.4064 - 4831 powder.
6mm Remington Reloading Data.
Hodgdon Reloading Data Center.
6mm Remington Trajectory and Hunting Applications.