Re: Sort of stuck case in chamber
Looking at the bolt, I can see that it's had some serious trauma more than once! To be exact, I think it's time to replace it. Now the bolt contacting the end of the barrel is a bad thing 97% of the time (there is the "cone bolt" setup used in benchrest shooting).
Here's what I'd be doing:
* remove the barrel, and with a depth micrometer, I'd measure the counter bore that round headspaces off of. Looks way too deep to me. Should be .220" +.000/-.003" roughly. But some folks cut the counter bore a little deeper to make the round headspace on the shoulder. If this is the case the the chamber has been cut too deep from looking at the photo. Better yet would be to get a .300 Winchester headspace gauge to see just what you have
* back to the bolt. Looks like it's been hammered front to back and also sideways. I'd replace it with an after market one. Have them set it up for an M16 extractor while doing this
* Looks like it's time to think about doing a barrel setback; no matter what. I'd set the shoulder back about .88", and cut new threads and a new chamber that will headspace to the new bolt (I just wouldn't reuse that bolt!) You could maybe rechamber the barrel to .300 Jarrett or .300 Ackley if it would fit (a .300 Jarret is nothing really but a necked down 8mm mag case or a sharp shoulder .300 WBY mag)
* I would at least take the reciever (stripped) and the bolt (stripped) to a good heat treat shop and have them x-rayed and checked for cracks. Might save your life.