NOT KNOWN DETAILS ABOUT SAKO 85 BAVARIAN IN 7X64 BRENNEKE

While in the hammer forging method, the barrel’s rifling is used concurrently for the shaping and lengthening operations. A mandrel is used which is machined to the specifications with the supposed chamber and rifling pattern. The mandrel is inserted in to the barrel blank, then the barrel is hammered all over it.The Sig Cross could be the rifle