The original Marlin model 1895 rifles were introduced at a time when smokeless powder loads and barrel steels were in their infancy.
Widespread shooter acceptance of smokeless powder , manufacturing methods, and was not guaranteed, and the major manufacturers were still clinging to blackpowder level pressures, manufacturing methods, and mild barrel steels. Remember, this was a short 9 years after the introduction of the world's first smokeless powder small caliber cartridge, the French M1886 8mm Lebel.
Yes, the Marlin is stronger than the 1873 "Trapdoor" Springfield design, but I would be very cautious in shooting anything but trapdoor springfield level loads in your classic. The barrel steel is relatively mild, and jacketed bullets will rapidly wear out the chamber throat. Heavy loads may not hurt it initiallly, but prolonged used will almost certainly result in loosening of the action, increased headspace, and other problems. I would stay with factory level M1873 Springfield loads and lead bullets.
HTH
John