It never hurts to consider the reason for the discount. If you get one you may want to buy alot of brass.
Well I would buy the 300 with the 24" barrel . Should there be a day when you could no longer buy brass a 300WSM reamer would save your day .
I have been looking for a ruger in this chambering . Part of the reason they are not being sold here in Central/northern Ontario Canada is because no dealer wants to stock one .
Guess that is the same reason BMW sales are about nil here too.