The Marlin Hammer pumps are not safe to be fired with any loads according to Marlin. Take that for what it's worth. I have seen a couple with the breech bolt sheered off. The Winchester 93 was designed for black powder, the Model 97 a strengthened redesign of it (they thought enough of damascus barrels to offer them on the M97 but redesign the action for the smokeless powder). P.O. Ackley once rebarreled a M97 to 30-06 and fired many rounds through it to 'see if the breeching would hold up',,and it did. The Stevens 520 is fine with modern shells though the early guns, like most any mentioned here, will have short chambers. They started making them in 1911. The Spencer I would stick w/BP level loads if I shot it at all. Win 12, Rem 17, Rem 10, 29, 31,,all hold up fine with modern loads. Any gun will wear out and wear out faster with the heavy stuff. Continued use of the takedown feature if present will accelerate wear at that point. Most have an adjustment for take-up. I shoot alot of pre war pump guns and have always used my own light reloads in them for the most part but on occasion off the shelf ammo goes through some of them without concern.
