Gun shot well, two shots touching at 50 yards is enough to promote the next stage of development -- shorten the stock and re-bed the barrel.
Mausers are clamp bedded with wood out at the end of the forearm. It was cheap, easy to do and fairly accurate. Mauser accuratizing people are split between full bedding and free floating the barrel, with each camp getting varying results on a gun by gun basis.
They are old war guns after all, and asking them to do a single minute of angle is a little bit much to ask, really. My best cast mauser (so far anyway) was hard pressed to do six minutes at 100 yards, reliably. 8 minutes was more common, but that was with 6 cavity mold dropped cast bullets which simply are not as repeatable as jacketed bullets generally speaking.
I decided to use a silicone bedding method on the entire thin part of the stock out at the end after I cut it off and rounded it a bit. I left a tiny portion of the original compressed wood bedding saddle to act as an alignment feature, since my stock is apparently warped a bit and the clamp saddle zone was off to one side a little tiny bit.
Silicon sealant bedding is noted for dampening vibrations pretty well and it can be mechanically strong enough to hold a front end together without requiring reusing the old forend clamping band arrangement (ie cutting on the steel). This seemed very doable to me.
of course you ain't taking it apart, ever again, neither ......