I did not shoot, but witnessed the results of two brothers shooting elk with 175g Sierra BTSP in their 7 Mags at 2900. Penetration and bone busting was impressive with the afore mentioned load. We had to quarter them up, packed them out on Mules.
I have heard that 175 Sierra is an excellent bullet. I have shot it a bunch out of the Mashburn but never on elk, but enough guys I trust have and I'd give it a whirl. It is an accurate bullet though!
