My buddy at work picked up a sako barreled action l61 I think then got a stock and spent the winter refinishing the rig.today he went to the range and shot it for the first time and can’t open it he gave me a call on what to do and he tryed all of what I suggested smacking the bolt handle with a chunk of wood wiggle it like a stuck tap ect.personally I have never had one this stuck.Any ideas on how to open it?sad thing is I offered to lend him my gauge set and he said it looks ok. He was shooting factory rounds.