After shooting 300+ rounds of factory rounds of mostly Hornady 110 I started putting together dies and materials to reload on a Dillon 550. All was going good until I discovered that most of my brass had small primers except Remington. It had a large primer. Darn. I must add that the Hornady shot less than an inch at a 100 yards through my Ambush AR15 and the Remington shot over 4". Probably nothing to do with the large primer. Next week I will take some samples to the range to test out. The Remington brass will be sorted out and put on the shelf for something? Just can't through gun stuff away..