moosehunter
Well-Known Member
Is it possible to rebarrel a win mod 70 in 300WM and open the bolt face and chamber to 300RUM?
Is it possible to rebarrel a win mod 70 in 300WM and open the bolt face and chamber to 300RUM?
The OD of the belt is .513 and the base of the RUM is .550 So you can re barrel or
just re chamber if you have a good barrel.
J E CUSTOM
JE,
When rechambering from 300 WM to 300 RUM, does the chamber reamer run in concentrically to the bore before the pilot reaches the lands? Do you end up with a concentric chamber while the chamber reamer pilot isn't engaged in the bore due to the smaller 300 Win Mag chamber preventing the 300 RUM chamber reamer pilot from reaching the bore?