And I found something last night that I needed to add. Be sure to inspect the case necks on the Winchester brass carefully. I had one from a once-fired batch that showed a massive amount of micro-pitting in the brass and in fact had a 1/8 inch split at the case mouth. I get the feeling that particular piece of brass was not formed under the correct conditions. So be aware that there are a few iffy cases wandering around that initially look fine.