Hes not a gunboards sponsor, but Mitch Shultz in CT is pretty darned good. His business is Gunsmithing LTD based in Southport, CT> SOrry I cant be of more help, but hes the only good gunsmith I know of.1909, thanks for your concern.
I don't think they are a sponsor, but E.R. Shaw Custom Barrels does this type of work and they offer a barrel in .220 Swift. I've never had a rifle re-barreled by them, but I have a couple of rifles with Shaw barrels and they are good quality. Maybe give them a call and see what they have to say about your project.I have a old Argentine Mauser with a useless barrel and I am going to convert it to a .220 swift. What I need to know is does any of gunboards sponsors make and fit barrels for this action?