 Remington renamed the cartridge in late 1978 to 7mm-06 Remington but just before the end of the year they renamed it again calling it the 7 mm Express in an attempt to increase sales.This resulted in people confusing it with the 7 mm Remington Magnum, and Remington changed the name back to .280 in 1981.The .280 is based on the .30-03 necked down to accept 7 mm (.284 in) bullets, with the neck moved forward .050 in (1.27mm).