I have a T/C Contender in 22 Hornet. My brass life is terrible. There are 2 problems. First is split necks and the other is loose primer pockets. I seldom get over 3 loadings per case. I load 4.0 g. Of BE with a 50 grain bullet. The load is accurate but brass life is short. It may be headspace in the contender. Your thoughts?