Well I've got a 7 Mashburn FL die now and it looks like I'll be able to use my Hornady seater so once I get a reamer, I'll be in the game. I sized one piece of once fired Hornady 300mag brass and had significant puckering and cracks in the shoulder. I didn't anneal and will try that, but it looks like I might want to make up a intermediate form die. Does anyone have any pics of the brass as they come out of the form die(s)? I'd like to get an idea of how the shape progresses.
