It's really more of an "intermediate" action, the Yugoslavian / Serbian M48 rifles have an action length specifically for the 8X57MMJS cartrige for example, but retain all the cock on open controlled round feed design features of the 98 Mauser action. This can make for difficulties trying to put one of those actions with 7 and 5/8" center to center action bolt dimensions into a 98 Mauser stock with 7 and 7/8" dimensions. But it's also problematic to try to fit that action into a common "short" action for cartridges based on the 308 Winchester with ?X51mm case dimensions.
The original 7X57mm action is a cock on open action that predates the 98 Mauser action. It's a bit of a different beast.
This page at Hoosier has one of the best general compare & contrast summaries on various Mauser bolt actions that I've found.
Hoosier Gun Works, Dealing in gun parts, 100000 gun parts, 2000 gun stocks, 1000 magazines, 500 barrels. Enfield and Mauser. Military and comercial.
www.hoosiergunworks.com