I some test loads with BL-C2 for my Mosin Nagant . Of course using the low end of info from Hodgdon data went to try them out . The after the first shot the bolt was stiff to open and the primer showed signs of high pressure . I walked back to the house and pulled the bullet on a round and double checked the charge and it was ok and the bullet seating depth was good also on the other test rounds . I went and fired another shot and same thing . I stopped and went and pulled bullets on all the other rounds and all checked good , was correct bullet size and brass . I have used BL-C2 with some other calibers with good luck . What am I missing here ? I have been reloading for my Mosin for years with H4895 but have had to change cause of powder shortages .