Well, just to show why there Ford's and Chevy's, I am using TAC with the 120 gr. TTSX's in my 7mm-08. It shoots sub-MOA groups.
I use Big Game for the 140 gr. bullets. RL-15 was my "go to" powder and works great, but I get as good or better results with the Ramshot powders and they meter so much better.
Skeeter & shootem-This is the load my rifle likes:
120 gr. TTSX
TAC-41.9 grs.
Win. Brass
WLR Primer
2.740� COL