I used 2.
The 210 Nosler partition and the 275 Gr. Speer, which was discontinued even when I was using it.
The Speer gave me a "bang-flop" and the Noslers put them down in about 2 seconds.

Can't say anything bad about either one, but I didn't kill lots and lots of elk with my 338-06 either. I have seen more killed with the 338-06 than I have killed myself with it.

Overall it's a great shell. Seems to have the best balance for covering the fields with bullets from 210 to 225. The big Speer was a one-time event. Kinda slow and curved in it's trajectory, but the killing effect was like a bolt of lightning.