I like 150g in the .270 for Elk, 130s if forced to use solids. But even with the higher velocity, the 130 solids should be held to a shorter distance than the 150s. They need the velocity to be 2100+ to work reliably. The Barnes numbers someone posted above are very optimistic. I won't even use them for Elk, unless required, in my 30 and 33 caliber Elk rifles.
The .270 is a good caliber for Elk and Partitions work great, if you can find them. I've only shot 1 of my 38 Elk with a .270, but the youngest uses a .270 for Elk now.