I fired some 156's on the third firing if ADG brass yesterday at 4 degrees and had a significant click on all. Third firing on ADG brass. Fired brass measures 5.3405-15, and brass ran through the sizing process twice measured 5.3245-70. Hornady says spec is .532 and fail to acknowledge a problem. They sent me a return label and said they would evaluate the die. Knowing what I know, it sounds like a waste of time to send it in, if they think it's fine to size to .532.
@rfurman24, they told you it should size to .529? Hornady has always been great, but the man I spoke to on the phone today was rather condescending and rather unhelpful. Did you ever get somebody to make you a die that will size the base correctly?