I have never done it but Vaughn Trueman, owner of the Bullet Hole Gunsmith Shop did a Henry and a 66 for me. He is a founding NCOWS member and former judge.
He is semi retired but I just talked to him and he still does that work. He calls it changing "the angle of the dangle". I don't know what it entails but it works on my rifles.
You can contact him at 319-233-0204. I told him you might call.
Will Ketchum