As long as you don't have any "flyer" shafts mixed in that are out of whack for weight or spine, as long as you cut a dozen Expiditions equally front and back to remove the slop you can get finished shafts that should spec out pretty close to XT's
Same with XT's vs Pro's, and to get the most from your Pro's do the same thing.

Never take your all carbon shafts from any manufacturer and install your inserts and simply cut from the back end, your shortchanging yourself of the best part of the blank.