Originally Posted by
airb080
I noticed that you are using Winchester brass, how many loads do you have on them. I had a similar issue with my old model 110 in 30-06 with Winchester after about 4 reloads on the brass. The primer pocket started to get loose, and started to crater. I was using the same load nothing different. My RP brass is running at 10 loads and is still good, and my nosler is on it 6th load and no cratering. Have you tried using a different brand of brass? Just a suggestion before you go and tear your gun apart.