Proofhouse in cologne accept no rifle with dovetail in the frontring for proofing, equal how deep it is done.

Proofhouse Ulm accept dovetails if they are not deeper than 3,8mm.

The proofhouse in Ferlach /Austria dont accept any mannlicher with dovetail in front ring, mausers only if the dovetail is not "to deep".

Especially in the early 1950s some very strange kind of dovetailings in front rings where made, i have seen barrel threads fully open.

So reproofing is for this kind of dovetail not possible, but there is no reason fro proofing if the rifle is ok.

otherwise- i would not shoot an system where the barrel threads are open.........