You might be trying to find a unicorn.To the best of my knowledge,no ammunition manufacturing company ever produced a 7MM-06.It was always a wildcat.As you know,the commercial version is 280 Remington.
""Having been released 32 years after the .270 Winchester, it had somewhat unspectacular sales. 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.""
Called remington the other day and they said that in late 1978 they made a few guns stamped 7mm-06 and mine is one of them also factory ammo stamped the same way I have shot 280 rem through it just fine but was hoping to find a box of factory ammo to go with gun Thanks