I'd take it to a for-real gunsmith (not some dude who works behind the counter selling guns) and get his take on what your correct length-of-pull needs to be, and then figure out your scope location from there. A gunsmith can make a good call on possibly shortening your stock and what needs to be done. With that .338 you need all the scope relief you can get, otherwise you might redecorate that eyebrow....

Even if you get the stock shortened, a new scope might be in order. Older scopes don't have generous eye relief, new scopes do, and you want generous eye relief on a .338.

I would take it to a reputable gun smith and see what he says. If a gun dosen't fit you it will be of no use to you. It may mean getting the stock shortened or get a new stock if you don't want to cut the old one. As far as the scope goes you definitely want all the eye relief you can get. I got scoped once and the memory of it stuck with me a messed up my shots for a long time. It makes you flinch every time you squeeze the trigger.

If you are going to buy a new one Leupold is usually pretty genorous with eyerelief so that would be my suggestion.

You do need to make sure of the fit. If you are short armed and maybe shorter than average LOP certainly could be your problem. Before lopping the stock I'd try what Cooner suggested. A set of extended rings could very well solve your problem. Add Burris to his list of suppliers...