I have a 1965 Stackpole reprint of the excellent [1940s?] book "Introduction to Gunsmithing" by Harold Macfarland.
But the drawing in the book can be improved upon. For flat bottom receivers there must be opposing receiver forces lining up on top and bottom. To do this the action wrench needs to be relieved for the recoil lug, so more of the large ring fits into the action wrench. Otherwise, there will be a bind, and the top of the large ring can be scuffed.
Here you can see I made an action wrench per MacFarland's drawing and then one with a relief cut for the recoil lug. This is for Mausers, Win M70s, Howas, Mosin Nagants, etc flat bottomed receivers.
Round bottom receivers; Rem 700, Sav 110, etc must be gripped differently. One way is ~~ a barrel vise on a handle~~ as in the pic of my previous post. This has the disadvantage of squeezing the thin receiver and possible galling on the threads.