Does anyone know if a ruger #1 in 458 lott can be
rechamberd to 460 weatherby.If yes can you recommend
a good gunsmith who can do the work. Thanks

The answer is a yes and anybody who works on the No. 1 should be able to do the re-chambering and conversion for you. A friend of my has quite a few No. 1 rifles built by Dennis Olson but he is too busy right now to take more work. There are a couple of gun builders here who has a lot of experience working on Ruger's No. 1 and they should be a good candidate for the job. Try this following source if nobody will chime in.

www.bowenclassicarms.com

SSK Industries should be able to do it; they build lots of #1s in calibers up to .600".
See SSK

They have done much of my gunsmithing, and I have been very pleased with the results.

George