I followed that thread but had some of the same doubts about the owner of the gun. Really need to look at how many people have sent guns to JES and been completely satisfied with them. It's easy to key on on one person with a gripe. If you look up reboring threads on different forums you'll find dozens, if not scores of replies from guys who have had JES do work for them and been very pleased. Myself included.
I cannot speak to the number of grooves as to which is better. I had JES do a three groove 375 Whelen and it shot great. Cliff LaBounty did a five groove 35 Whelen for me and it thinks it's a varmint gun.
I am a fan of reboring. I've done two rifles and friends I shoot with have done another three. All shot as well or better than the original rifle.
