Powder Suggestion

[BaconFat]

Widener's has Accurate 4064 in stock along with Norma 200, 201, 202 and 203B.

Here's Norma's load data for the .308W: http://www.norma.cc/en/Ammunition-Academy/Loading-Data/308-Winchester/

 

[Romulus]

It would not seem so, but I have had one of my best loads with XBR with the 135 smks, 155 2156 smks & hybrids, & my favorite the 168 hybrid. YMMV