Well I'm not in the US of A, I'm in Australia, the target animals for this rifle would be our 3 wild bovines Bintang, Scrub Bull, and Water Buffalo all 3 are very dangerous and will stomp and gore you and Sambar Deer would also be on the menu they are not as large as your bull Elk but are extremely strong and can take a shot very well and will run even with good placement
The .35 is great for these animals, a long action .358 with 150-200 fps over the .358 win would be good as it would be a custom job why not have a custom chamber ?
