Thanks for all of the advice. I got a Boyd's laminate stock for it, Williams peep sight, and necg barrel band for the front sight. Here is how it looks now.
How it shoots is the important thing. Recoil is fierce, but not unshootable. It feels about 1 1/2 times a 3" shotgun slug, but hits faster. I used some technique to shoot I read on chuck hawks, using the offhand to grip the stock tightly. I got a 2" group at 50 yards, standing and shooting with a sling. I believe the rifle is capable of better, but my ability to shoot it is the limiting factor. I put 8 factory loads through it before I was beginning to flinch, and it was actually kind of fun as I've never shot anything like it.
Reloading is going to be a necessity to keep shooting it due to the $5 a shot cost of factory ammo, but I am somewhat on the fence if I want to keep it long term, Before jumping all in. The three options I am looking at are rebarrel to 338 win mag, sell it and get something else, or reload for it with some 300 and 350 grain bullets and use as a 200 yard or closer gun. For now I may just keep it and shoot it some more, it is not everyday you can shoot a 458 win mag.