For my Wiseman '06 AI I've found that the 180 BT does it all with 4831 in copious amounts, with a Federal match primer, and Lapua brass. I've seen 2995 ft/sec on the chronograph, but use a load at 2850 which is awesome accurate. Generall 150's at 3100 MAX, 165 at 3000 MAX, and 180's at 2900 MAX, that's what it will do.