Nice looking rig.

Have you slugged the bore yet?
If not, do so before you order supplies for it or shoot it.
I'm guessing it's a .318" bore rifle, and you need to know for sure.

Either way the bore ends up, brass is going to be easy for you, I use modified 30-06 brass in a very similar rifle.

Have you gotten the metal out of the wood yet?
I'd like to see the proofs on this rifle.

--Tinker