None that I can think of. My guess is you'll be well pleased with JES's work. I had him do a 30-06 to 375 Whelen and it turned out great. I've never heard anything bad about his work. He did a three groove on my 375 and it shoots fine.
My 35 Whelen was done by Cliff LaBounty from a 30-06. It thinks it's a varmint gun.
I wouldn't be afraid of a rebore from JES.
Last edited by mart; 01/31/15.