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

Originally Posted by veitnamcam

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

I understand what causes it vc I just can't understand y 1 lot would do it and the other half of the batch hasn'tso 1s on the left have separated 1s on right were pulled but same batch

Originally Posted by Padox

I understand what causes it vc I just can't understand y 1 lot would do it and the other half of the batch hasn'tAttachment 209399so 1s on the left have separated 1s on right were pulled but same batch

Measure those fired cases vs the ones you pulled as per Cigars picture above to a mid point on the shoulder.
If you don't have a ogive measuring set or something you could use a short bit of tube or a 44mag case or whatever will go over the neck and meat the middle of shoulder.
The actual measurement is not important as long as it's fairly repeatable and you can compare the two.