I started using Nosler Partitions in the Fed Premium line years ago before all the hype about bullets started. In my 24 inch barreled 338 WM, I was partial to the 210 grainers. In my area, shots out to 400 yards were a real possibility. I liked the slight advantage the 210's gave over the 250's. Keep in mind that back then, unless you reloaded (I didn't), the Fed Premiums were the only real choice if you wanted a premium bullet. My pops didn't believe in all that premium bullet crap, and killed more elk with his 338 WM & Core-lokts than I ever will.
I believe that you should consider what ranges you expect to shoot, and then go with the biggest bullet that you can. Then find the one that your rifle likes the best. If you don't reload, then take a good look at the Fed Premium line.