I have a 1970's Weatherby Vanguard in .300 win mag and after firing a couple of shots the bolt won't open. It happened twice today. After the first time, I took the gun to a local gun shop and he asked me to leave it for a couple of hours and he would get it opened. When I went back, it was opened but the gunsmith was gone for the day and I never really got an exact answer as to what he did. The other guy there said they just lubed it good and worked the bolt open? No charge and away I went back home to shoot some more. First shot ok, 2nd shot was a miss fire with a new shell?? and third went off but the bolt is jamed again. This gun was my Dad's, I went to his house to talk to him about it but he is dying of lung cancer and could only say that the gun has done it since it was new. I will take it back to the gun shop tomorrow when they open (it's 6:40pm). but thought I would pick some brains.