Ok so I looked at the primer sticky and Ive seen several post mentioning the cci 400 and 450's. My question is whats a BR4? Im new to reloading and picked up what they had at my local store for a couple of bucks. I bought AA2200 and I have a swagger die coming (i started saving my brass got 225 federal cases). Will the BR4s work? Plan on using some 110 grain S&B's i got from cavity back. Also will be loading 10 and 9mm. (got everything for 10).