Person,
He should be fine with it.The .338 WM is not as nasty as some say,and I bet alot have never fired one.
Ruger makes a fine rifle,a little heavy but good.If the Winchester is still around I would pick it up,little spendy for a used rifle but still lot of life.Savage also makes a good entry line rifle,and with Howa.
If I had a choice the Tikka would be it,line it out with a Burris 3-9 scope and stock up on 210 gr Nosler.
Oh and also a sims pad would not be a bad idea,make it a more fun at the range.
BBJ