I like the BT bullet and load it in most everything I have. I have found, and proven, that you can overdrive them. After calling and writting Nosler, I finally received a letter admitting the same. They continue to improve them, just be aware that they do operate better at the slower speeds.
Swampdog, the 7mm Mag is doing just that. I've quit loading them in the 7 Mag and just use them in the 7-08, and they are great.
I've found for all my 30 cals, 308, 06, 300 Wby, and 300 UM, I get my best results using Sierra's 165gr HPBT Gameking. Terrific accuracy and powerful on game.
That's my 2 cents worth.