So SSS seems to have me taken care of. They're going to supply me with a .473 LH, LA bolt head and open up the FP hole to accommodate my older, larger firing pin assembly. Unfortunately, the 270 barrel I ordered has been lost in the mail. My money was refunded and I'm back to looking for a barrel. This will give me a chance to do everything nice and slow and carefully. :) Next project will be removing the existing barrel.

Exciting trip so far. :)