6 mm Remington

From Wikipedia, the free encyclopedia

The 6 mm Remington was introduced by Remington Arms Company in 1955 as the .244 Remington. It is based on necking down the .257 Roberts. Originally intended as a Varmint and predator cartridge, the .244 was never factory loaded with bullets over 90 grains and rifles marked .244 Remington have a 1 in 12 inch twist that may not stabilize the heavier 100 and 105 grain bullets. In 1963 Remington renamed the cartridge, calling it the 6 mm Remington. Rifles marked 6mm Remington have a 1 in 9 inch twist and can stabilize all commercially available 6 mm bullets.

The 6 mm Remington has a slight ballistic advantage over the much more popular .243 Winchester due to larger case capacity. However, there is no discernable difference in real world hunting applications. The longer case neck of the 6mm Remington is considered desireable by handloaders.