some gunsmiths who are prepared to call a spade a spade,have written of this, and one of Australia's former premier gunsmiths told me that himself.
due to some who promote and own these actions, it has become politically incorrect to mention the problem.
maybe dwm had some quality control issues then who knows.
there are plenty of other choices out there where you can play it safe.
FNs being the pick of them.
the mauser action relies to some degree for safety on having a degree of softness so it will stretch/bend rather than shatter.
case hardening reduces wear from function.
bruce.
The one I used for the 7x57 I built was the tightest and slickest my GS had worked on.Excellent action ... the master gunsmith who taught me the trade classified them as very good ..