AkMike
(.416 member)
18/06/14 11:21 PM
Re: Double trouble - chamber is cracking case necks.
I suspect that it's Norma ammo. They had a problem with the 9.3 brass several years ago. Many of the ones I bought for loading my Chapuis would separate at the base after 1-3 firings.
Try another brand or the new stock of Norma.