Welcome!

Although I'm not sure of who has what in stock, I'll say Midway and Huntingtons would be the first places I'd look -- once I'd cast the chambers with cerrosafe and slugged the bores.

Who made your rifle?
What action type?
Damascus barrels?
Do you have photos for us to see?

Have fun with that thing. I'd love to see how it comes together for you as you get it running

--Tinker