Hi, uzer
308win
It will cycle a magazine of unfired ammunition smoothly as always, however when a round is fired the bolt handle will lift up as normal but the bolt will not open, it is firmly stuck shut. The only way it can be opened is by several very firm blows. Once it moves around a ¼ inch it then opens easily. On examining the fired case no obvious signs of any kind can be found.
All fixings are tight and the chamber has been thoroughly cleaned also the bolt shows no signs of damage or excessive wear, but the problem still exists.