Correct, I did a 6UM-30 just to keep things simple - buy 6UM-30 brass then plug n play at a small decrease in performance over the -40 degree shoulder. Will see how much once I get it shooting.
Put in an order for a 6UM-30 at Unknown Munitions in early January. I live right down the road from them in Post Falls, ID and their store is like Disneyland and all ppl there were great to work with. I have 100 pieces of the ADG brass on backorder as well as a set of the Whidden dies. Was able...