I'd leave the 150 grain for the 28 Nosler. The 7mm08 does better with lighter monos like the 120 grain. Load it with Varget in the 3000 fps range and you will love it. I used to run 140 TTSx in my 7mm 08 and have switched to the 120's (hammer hunters in my rifle and 120 TTSX for my wife's rifle).To start with I have a 28 nosler after last year I decided to get something a little lighter for long hikes . I ended up getting a Howa 1500 7mm08 I have some barns ttsx 150 grain bullets left over from my 28. What would be a good powder to start with