Ya, I'll shoot mine as far as I can get a range
We wacked a number of elk with the 270 and 270 WSM this last season, from 85 yards to 865 yards, going from the 140's to the 165's, even in the 270 win was a major upgrade on elk. Depending on your elevation though you may need to twist them up in a 1-9 twist, I'm at 5600 plus and we do great with the 165's in a 1-10 and my WSM does well with the 175 also. The new Berger 170 should be just amazing in the WSM, with a .703 BC in the 3050 fps range it's going to be very sweet though I expect the Matrix will hold it's own!!!
I was very impressed with the job the 165 Matrix did on the bull I shot at 865 yards, what I see with these bullet that I like with elk is the sectional density is up over .300 and you can see that coming into play when you go from a lighter bullet that won't clear an elk to one of the heavy bullets that blow through them leaving a path of carnage.
The Norma brass is excellent but it is soft and you have to kinda baby it, the Rem brass is my favorite even though it takes some work to get into shape. I can buy a hundred pieces of Rem brass and it will last the life of a barrel.