i wouldn’t be concerned about shooting the older barrel. As long as there is some decent rifling and it locks up well it’s good to goI won't be shooting a vintage barrel. I will just continue my search for a modern shooting barrel if and when I want to shoot my WW2-era Rem Rand. Thanks for asking.
There is more to the story, by the way. I went back to the seller of the vintage barrel and told him I would buy the second barrel he had to offer and which was in better condition for shooting--should be more accurate, etc. I bought it and guess what--it was an even earlier barrel. From what I later learned, both barrels are pre-1924. One has the intertwined HP and the other has separate H and P over the chamber.
Still need a modern shooting barrel but no complaints.