It would be considered a "short" action.
long action magnum
The caliber designation of 7mm-08 is considered a short action.
If you are refering to the 6.8 sps cartridge then that cartridge is a short action cartridge.
The Remington 700sps in 270 wsm is a short action .
Short
If its a .308 its a short action.
The start of long action cartridges is the 30-06. The 7mm Mag is longer than 30-06, so would it be considered long action.
short
Long action. The .270 cartridge was based on the 30-06, a long action. .308 length is short action.
30-06 and longer cartridges are long action. .308 is short action.
What caliber is it? The length of the rifle cartridge determines if it is a long or short action.