I'm not sure about how handy that one shown on GB would be. It actually looks pretty good
except for the very high scope mounts for safety clearance. Uhg- probably no cheek contact.
Anyway, I too am not going to say they are the strongest action out there but my wife killed a veritable traincar load of elk and deer with a 7x57 loaded to well below the max published standard conservative velocities and pressures. Really no need to hot rod any rifle anyway- no matter if an M93, M95, M98 or Winchester M 70. If you need more gun get a 7mm Mag, one of the 300 Mags or a 375 HH.
For some reason, maybe because of Hatcher's reports or knowledge of testing of Mausers or ??? but I have more trust in an M1895 Mauser than a low serial number "brittle" 03 Springfield or a US Krag with that common pesky cracked lug. I have a Chilean 95 Mauser rifle in pristine, unmolested condition. I shoot both cast and jacketed out of it with
ZERO worries. I keep it below published max for the 7x57. I enjoy shooting a rifle with that level of workmanship. It's as good as or better than any other rifle I have- new or old.
Additionally, I know a fellow who came across a pile of real beater, surplus small ring South American Mauser 93 & 95 barreled actions for near nothing. He tested maybe 5-6 different actions, IIRC as it's been quite a few years ago. He set out to find out how strong or weak they REALLY are. He grossly overloaded and fired each with a fast pistol powder under a heavy bore obstruction. He used a known Mauser 98 action as something to compare against. He found very little difference in overall action strength among all of them including the 98. As expected the 98 deflected gas better than the others. Based on known comparables, those test pressures were likely in the 100-125 kpsi range. Everyone was expecting more dramatic results like: sheared lugs with bolts shooting out rearward, cracked receiver rings or complete breeches or splits in chamber walls, etc.. None of that happened. All shots "vaporized" or fragmented the case heads and blew the brass pieces and gas out through the opening between bolt head and the receiver. All the the bolts were set back significantly but none beyond about 1/4- 3/8". My take away was that they are plenty strong for published 7x57 data. Plus all published max data already has some built in safety margin and that applies to all cartridges. Stay within the limits and have nary a problem.