I have an early 80's M77 in 25-06. I bought the gun, customized the stock, floated the barrel and put in a 2lb trigger. It has been my favorite rifle ever since. I had some reloads special loaded for it in 100 gr and have owned 25 boxes of these shells and shot this gun with these shells for 40 years until recently ran out. I bought some factory shells last year and am having trouble closing the bolt with factory shells. I literally have to force the bolt closed and I scar the shell in the chamber. Anyone else have a problem like this? I have tried Federal and Hornady factory loads in 100 gr. I bought 20 boxes so I need to know if it is the shell or the gun? Never happened with my original reloads. Thoughts?