I would work something up with the Partitions, for a .308, powders I would work with would be 4831 or possibly 4350.  Those two powders always worked well with my 30-06, I would think they'd work well in a .308 also.  Another powder choice would be RE-19.  Based on what game you're hunting, I would go for velocity over sub-MOA groups.  A lot of guys try to get sub-MOA groups to reduce the margin of error in shooting.  But, since you're going after Elk, I'd focus on working up a load that produced 2700 f.p.s. and would consistently shoot >5" groups at 300 yds.  My theory to this is this: you'll most likely be taking a 250 - 300 yd. shot at the antelope, say 200 yds. at Elk & Mule deer.  Based on your previous posts over the last few years, I assume you're a pretty accomplished marksman/hunter.  Therefore, I assume your girlfriend can shoot also.  If you're getting 2700 fps. with a Partition, should you hit bone, you should still have enough energy to get through it and penetrate vitals also.

One note of caution should you choose the partitions, the earlier one's made by Nosler would sometimes have core seperation.  Make sure that what he sent you isn't old.  If they were made in the late 90's or after, you'll be good to go.  If made ealier, do some research and ask if the lot number is one that experienced core seperation.  I never saw it myself, but I heard friends talk about it.  Hope this helped.

I would probably just stick with the 165gr as a hunting load and use the rest for plinking.  The 165/168 gr seems to be a sweet spot for most 308's.  All the used brass you have should be fine, run it through a cleaner, full length size it.  

Varget, Benchmark, and BL-C2 are good powders for 308.  You can find a bunch of data to match your various bullet collection here:

http://data.hodgdon.com

I've had two, one was my go to rifle for a long time. Both of them prefered 165 and 180gr bullet's. Primer's didn't matter enough to make a difference really but powder did. Best powders for me were BLC/2, IMR4064, IMR3031 and W748. Didn't seem to matter which of those I used. I never tried slower powder's with any bullet but had I maybe I could have got thos 150's to shoot. But the load I finally used for everything was a 165gr with any of the above powder's.

Heres a proven game smasher load for a .308 win

45.0gr of H4895 (This is a compressed load) and 150gr Hornady SST, @ COAL of 2.750"

Winchester brass and winchester LR primer

You can even use a Hornady GMX with it but hold back .5 gr powder, even though they say you dont have to but its just to long of a bullet for that compressed load.

Well whats the load you decided on???

We played with the 150gr GMX's and used 45gr of H4895 @ 2.775"

and 150gr SST with 45gr of H4895 @ 2.750"

Both shot well but my buddy has to use the GMX for California.

The season starts Sat 9-17 so we'll see what he does for deer?

Going with 46 gr Varget and 165 Partitions.  Not gonna fool around with a bunch of different loads for different game.  But I did use a bunch of those 150 Sierras for light target loads with extra powder I had laying around like IMR 4007.

        Well my buddy smashed a nice Ca D7 buck with that GMX load and he said it dumped it in its tracks. 

I'll get some pics and post them.

Good luck Exbiologist.  I have about 21 days 'til I head to Durango for my Elk hunt.