Sir Smallfry, I have not had Pac-Nor chamber one for me, but I have heard only good from others who do that. My Gunsmith is about to get me looking for another, so if you do it, let us know how it turns out and I might be next.
Bottom Metal might depend on specifics of old Classic versus newer FN/SC M70, and what kind of stock you have or do you want other possibles ?
Are you doing one of the Extreme Weather .338 WinMags from FN/SC, like this:
Whatever you do on an M70 it will probably have a sheet metal box needing some reinforcement on the front of it. Here is one done when the Gunsmith pipeline was flowing more regularly, soldered-on stainless:
When the pipeline flow got sporadic I took matters into my own hands on a .458 WinMag M70 Classic. That would be Marcella. I found a piece of steel and used a hacksaw and a bastard file and J-B WELD:
J-Bubba WELD is as good as solder, in my bubba opinion.
Ron aka "Rip" for Riflecrank Internationale Permanente NRA Life Benefactor and Beneficiary .458 Winchester Magnum, Magnanimous in Victory THE WALKING DEAD does so remind me of Democrap voters. Donkeypox.