I've gotten the best accuracy from my 7mm08 with IMR4350. At 46.0gr of IMR4350, you'll be somewhat compressed with the 139gr IB or the Nosler BallisticTips. Best accuracy has also been with the Sierra 140gr ProHunter (flat base bullet), but the boat-tail GameKing is close.
Velocity is nominal at about 2,800fps.
I've gotten higher velocities with H414, H4350, and RL17, but accuracy is mediocre (2-3moa).
I've got a really good load with BLC2/Win748 and a 139gr Interlok, but other 140's require a 2.0gr charge reduction to avoid pressure issues, but at 2,850fps @44.0gr, it a good one for deer. The regular BTSpt interlok may be a better choice for the 7mm08 for elk, anyhow.
fwiw: I had a bad experience with the box of Horndy 139gr SST's (unbonded version of the 139gr IB). They failed to expand at the 7mm08 velocities. Be sure to hit shoulder or spine with those bullets....
I've killed 20+ deer with my 7mm08 and a friend took an 6x6 bull elk in '05 with it. I provided him with the 46.0gr of IMR4350 and 140gr Nosler Partitions. They did the job, though I'm reluctant to use the Partitons again as the only 7mm bullet I've ever recovered from a deer was the partition from a 90lb doe. Admittedly it was a raking shot at ~100yds. The bullet didn't hit any really significant bones (ribs) and was lodged under the hide next to the pelvis (deer was facing me). Penetration was a little bit underwhelming. I've seen better performace from the 140gr Remington CorLokts..... at 1/3 the price, too.