Thread: Case head separation imminent

Originally Posted by Padox

This is in a 270 running 52gr of win 760 so 1.5gr below max book load and it only seems to happen in the 1s I used magnum primers in the rest are fine so far I've had 2 sleeve in the chamber and prob 10 actually split the casing around that Grove line I was contemplating weather it was my load or my rifle I have been using the same load for prob the best part of 10yrs and the 1st time iv ever had an issue with it and the only dif was I had to use cci mag primers cos I couldn't get any Winchester large rifle

Go back and read post no 1 and 2 again.
Primers are not going to cause case head separation.....even overloads are unlikely to.
What causes it is explained in post 1 and how to avoid it in post 2