I think that resale would be better as an original rifle than something boogered up. If they shortened the stock you may have a problem BUT my experience is most guys have a pad fitted and do not have the stock shortened and usually shy away from the extra bit that would cost.
As far as recoil is concerned I think it's over stated. Yes, a 338 Win Mag is not pleasant to shoot at the range. Especially all braced up and sitting at a bench, The recoil comes straight back and can be unpleasant. On the other hand if you are actually hunting elk, you'll have a coat or jacket on and be standing on you hind legs, kneeling or sitting and in all those positions your body has a chance t roll with it, Besides your mind id focused on ELK not recoil.
I load my 338 "S" balls to the walls with 250 Nosler Partitions across the screens at just under 2900 fps. I've killed about a dozen elk with it. None required more than two shots and frankly I can't tell you what the recoil felt like because I was focused on the elk and the shot.
I'm not trying to sell a $2 pad hear and frankly prefer to keep most of my Ruger stuff. BUT I do understand wanting them stock as possible and when I buy #1s, which is fairly often that's what I look for. No matter what you put on there and how much you paid for me that is a deduction in price.
I shoot my 338 once a year at the range to be sure everything is still dead nuts. 3-5 shots and I'm done. Then if I'm lucky 2-3 at elk at the most. Then I'm done for another year.
I do occasionally run across a butt stock that has been significantly shortened. Usually sellers don't tell you that . To date I've simply passed them on to another #1 guy that is short of stature or more rewording has a kid he's building a correct sized rifle for.
Trauma: Listen to both pieces of advice and do what works................for you.
Ross