The rifle:
From the Monroe gunshow I got a 1918 Savage 99 take down 250-3000 for$175 dickered down from $200. I then unscrewed the take down barrel.
The barrel
From Ebay I got a 6mm PPC take off barrel with 460 rounds fired, 5.1 pounds, 21.5", one 14" twist, Stainless Steel Shilen for $75 + $12 shipping = $87.
The reamer
From Pacific Tool and gauge I got a 6mmBR reamer with .272" neck and throated for 87 gr Vmax [Fb .085] for $138 + $9 ship = $147
The machine work:
a) I cut the chamber, shoulder, threads, extractor relief, shank relief, bolt head relief, and loading finger relief.
b) I made wedges to hold the receiver in the mill vise. I used a late model Sav99 as a drill patter. I drilled and tapped and used Weaver mounts meant for a Sav99.
I took it to the range and shot 5 groups.
One was a 0.1" 3 shot group at 50y.
One was a 0.3" 3 shot group at 100y.
Some of the groups were not so good. The 1 in 14" twist will not stabilize a 75 gr Vmax, but it would stabilize a 65 gr Vmax.
Pressure:
This is the old Sav99 that is not good for modern pressure. So I kept it down to ~ 80kpsi
the threshold of CCI 450 primers piercing. The action stretches the brass .003", so that is not practical.
What does it all mean?
The Sav 99 is a horrible horrible gun to rebarrel with the breech cuts.
Get a Sav 110, 98 Mauser, or Rem 700 that get rebarrelled with just the lathe.
Avoid 1903 Springfields, Mosin Nagants, 1885 falling blocks, and Sav99s.... unless you really want to fool around the breech on the mill.
I have a couple Sav99s of mine waiting for rebarrelling. They can just wait a while longer.