400bull
Well-Known Member
This past fall I purchased an new Win M70 Sporter 300 WSM. At the time I did not have enough time to work up my own loads so I purchased a box of Fedral 165 Fussions to hunt elk with. I had a successfull elk hunt and the Fussions shot great out of my rifle in the fall. I have now had time to work up my own loads and needed to burn up the remaing Fussion (10) that I had left over. I decide this past week to burn them up over the weekend. Much to my supprise I started to get a stiff bolt lift after about the second or third round down range. Inspection of the primer and brass head stamped showed high pressure signs also (flattened primer and bolt markings on brass). I switched over and shot a couple of my hand loads to see if they would show any high pressure signs also. Not a sign one with the hand loads. I'm pretty sure that the issue is with the factory ammo. Have any of you ran in to high pressure problems with factory rounds before? I have always thought that I would be more likley to see high pressure signs when shoting in the high summer temps not in the cool winter temps (mid 30's). Do you think that it was the factory ammo or could the chamber on my rifle be out of spec?
400bull
400bull