an opinion re "action wrenches"
A while back I was tasked with removing the bbl on a Tikka..... similar situation, odd-shaped receiver, no fitted wrench to be had. I googled it and saw some truly red-nekkid and uninformed receiver destruction going on.
The recurring thread out in the web (and on this and other forums) was that Tikkas are wikkid tight and wikkid hah'd to remove.
I tried several "universal action wrenches" which instead of being fitted, as in matched to a round receiver surface, have tapers and vee-grooves to keep them from spinning on the receiver. The action wouldn't come off. Looking at it my feeling was (is) that the ill-fitting wrenches warped/caved-in/chinese finger-ringed/bound up/pinched the receiver ring into the threads.
I/we made a wrench, a fitted wrench and the problem went away.