The OD measurements posted are correct but are only the starting point. You also need to determine bore diameter and adequate wall concentricty before determining if tube installation is feasible.
You can check for eccentric bore/wall using a gauge of this type.
and bore diameter with a gauge like this one.
Hardships are quickly forgotten. Intense heat, bitter cold, rain and snow, fatigue, and luckless hunting fade quickly into memories of great fellowship, thoughts of beautiful country, pleasant camps, and happy campfires.
Fred Bear 1902-1988