If the axle seals aren’t leaking and the springs aren’t sagging, there was very likely no damage done.
FWIW, I’ve driven or been around 100s of 1/2 ton trucks in construction for 20+ years and i can’t recall a single broken rear axle or spring. And some of the things I’ve subjected c clip or semi floating axles to would give half the rvnet membership an immediate heart attack! I’ve added E rated tires and heavy duty helper springs or Timbrens to close to 20 1/2 ton trucks and then run them like a rented mule.
You’re fine. What kind of camper are you looking for ?