I tend to agree with GB....
on this one. My first guess with velocities you claim, is that you are way over on the pressure.
One way to check, would be to load up another 5 with the same components except use CCI 350 mag primers.
My guess is that you blow the primers. Also if the primers are cratering, reduce the load by about 10% and try again. Just be safe.
I have been shooting a 300 savage for over 15 years and have used these primers exclusively. No pressure problems and good velocities.
HBL
on this one. My first guess with velocities you claim, is that you are way over on the pressure.
One way to check, would be to load up another 5 with the same components except use CCI 350 mag primers.
My guess is that you blow the primers. Also if the primers are cratering, reduce the load by about 10% and try again. Just be safe.
I have been shooting a 300 savage for over 15 years and have used these primers exclusively. No pressure problems and good velocities.
HBL