Second suggestion of plain version of Sauer, Merkel or Husqvarna top lever doubles, either external or internal hammers. I use such old hammer doubles with 75-80+ cm barrels (about 30-33 inches) and various solid chokes for clay target games and also for all my bird hunting. Most I have paid for any was about USD1000.

Aside from finding one in excellent mechanical condition, finding one stocked such that it mounts and points and swings really well for you is main issue.

To get heavier weights will likely have to go with internal hammer doubles in 12 bore.

Niklas