Best groupings were with Nosler Bal. 150s pushed by IMR 7625. The Nosler reloading book has plenty of good loads.
Currently I use Nosler 175g partitions so I can use them for Muleys and Elk.
Tried the 150g. Scirocco' s but wasn' t overly impressed with their performance on deer;
http://www.powerandfury.net/j02deer2.html (VERY graphic pictures so don' t visit if you don' t want to see the results).
The 175g worked just fine for my Elk last year;
http://www.powerandfury.net/j02elk.html