I just finished mine, put the DE brake on yesterday. I have fired a total of 5 rounds for barrel break-in and not at a target so I am not much help yet.
I am planning to shoot the 162 A-Max but did pick up some 180 Bergers to compare. I am going to try H-4831sc with the 162s but think H-1000 may be better with the 180s.
I plan to do some development soon but it's hard to get excited about it when it's 17 degrees outside
I have been hearing from others that they are getting 3000fps with the 180s but that is with a 30" barrel, mine ended up at 27 1/2".
I'll update if I get any data.