I think either bullet would work fine, but I've always loved the results of Nosler Partitions so well that I'd pick the Nosler. I have not tried TSX's on game yet, even though I have lots of boxes of them and I never reach for them when I'm handloading. (They'll probably go on my estate sale.)

Both Phil and MD are way more experienced in big animals than me and I'd take either of their words.

I'm struggling with which rifle to take on a planned grizzly bear hunt, but I think the fiberglass stocked 350 will work fine. Most of my rifles are wood stocked and that is the biggest consideration for me.

I prefer classic.
Semper Fi
I used to run with the hare. Now I'm envious of the tortoise and I do my own stunts but rarely intentionally