Howdy all, I have a Kimber Montana in 223 that I really like. It shoots 50gr V-Max really well but the 75 HPBT is proving more inconsistent. I will continue to work on the 75's and shoot a bunch of 50's but in the case that I want to rebarrel to a faster twist barrel I was hoping for some help.

1. What is a top quality gunsmith who will do the work on a Kimber Montana?

2. What brand of barrel maker, # of grooves, and twist (1-8" for me) would you choose.

3. What contour, stick with the factory or go up a tad i.e. SAS's Lilja contour which extends to .610" from the forearm to the muzzle.

Thank you all very much.