I seen Broz, did some testing with N570. He got very good velocity. I’m going to look for it at my local shop.I also have not shot the 230 Berger but I have shot a bunch of the 225 ELD-M out of my 300 SS and some out of a 300 Dakota which is just slightly bigger than the win mag. I've just started to play with them in my Dakota but so far I will be testing RL33, Retumbo, 8133, and N 570. What little I've done so far I'll be sticking with RL33 or N 570.