Some of those milsurp rifles feel as if they were assembled in factory with "gorilla" strength using 13 foot long snipes - I had read that might have been done with a hydraulic thing, in some factories - and, a hundred years of never being removed usually does not make that job easier. Two kinds of action wrenches - the internal ones that lock-up on the bolt lug seats and you operate through the receiver - I think they are fine for installing a barrel, but I have never broke a milsurp one loose with that type - although I tried. Other kind of action wrench is like a "clamp" that goes around outside of the front receiver ring - no need to torque the clamp bolts too tight, but need them to be "tight enough" that the action wrench surfaces can not move or mar the receiver - if you clamp them "too tight", that "clamp" is probably tightening up that receiver to the barrel threads. Brownells used to sell a "kit" - an external action wrench body and various inserts that were used for various receiver types and sizes - not all are the same. I have a "home made" one for Enfield rifles - I also have the inserts for Enfield, Lee Enfield, various Mauser, commercial Remington and Winchester, etc.
