Hello Folks

If I was to have a Stevens #2 barrel (on an original 44-1/2 chambered in 22RF) relined to 38-55 with a 39/64ths liner what sort of loads would be safe in the rifle??   

What would be a maximum safe pressure to reload to?

Thanks

Thanks for the suggestion but I'm down in New Zealand and none of the several barrelmakers here do rebores -  probably because they are all using the button rifling process? ?

Problem is the action you have is not designed for the 38-55. There are three actions that have the extra hammer block that I have seen, 28-30, 32-40 and 38-55. These actions were designed for target loads with black powder pressures. I have had more than one come in that was chambered in 38-55 that was not safe to shoot anymore because it had been fired with to much pressure. 
A close fitting liner will take the pressure of factory 38-55.

My bad, I was thinking 44, not 44&1/2. The 44&1/2 will handle 38-55 with no problem.

Most commercial liners that are chambered for the cartridges they are intended for will stand SAAMI pressuresfor those cartridge on their own. The problem comes when the liners are chambered for cartridges they were not intened for. If the fit of the liner in the chamber area is appropriate,  they will be as strong or stronger than the original barrel. I usually bore the chamber area of the barrel for a lite press fit and drill, ream the rest of the barrel. If you have a concern it might behoove you to ask the liner manufacturer his recommendations. 
Lee