I think you will find the surplus ammo loaded for the Tokarev is way too hot for the Mauser. The .30 Mauser round does not have the pressure of the Tokarev. The surplus Tok rounds around today were loaded for the sub-guns first and the pistols second. The top .30 mauser rounds were loaded around 1400 fps while the hottest surplus Tok is hitting around 1600 fps. So to save your Mauser stick with the ammo made for it.