I have used 120 gr. BT, 139 gr Spire Point, and 140 gr. BT, and 145 gr Speer Hot Core.
I settled on the 120 gr. BT. I have had good results with IMR 4064, RL 15 and Varget. I use RL 15 or Varget whichever is available. The 120gr. Ballistic Tip is a very good bullet. I've killed both deer and hogs from several feet away to over 225 yards. I've used the same load in several different rifles with only slight differences in headspace and bullet seating depth. The first 100 yrd cloverleaf I ever shot was with the 120gr. BT and 4064. I look no further now for a bullet for 7mm08.