I sent a MKV .257 Deluxe in for a re-barrel and it did take a little bit, but nothing out of the realm of acceptability. When I got it back it was awesome work, couldn’t be happier. If I remember correctly, whole thing cost about 4-500 bucks.
Rifle is a Japanese made Deluxe that my dad uses. It originally had 24” barrel and they went back with a 26”er with some of the deepest blueing I’ve ever seen. Just really really happy with the overall experience.