I got an older Ruger super-blackhawk chambered in 44mag. It is a very decent shooting gun for both target and game. You could easily shoot your magnum loads for the boars, or scale it down with some 240gr bullets and 8grns of Unique for plinking. Wont kick too much but you still have the nice big bullet for impact. It is alittle on the big side, but on the other hand it is also well made with thicker chamber walls if you are in to reloading. It can handle a wide range of "hot" loads while trying to test new bullet/powder combinations, although I would not recommend stressing it to this extreme

The 44mag kicks ALOT with the magnum loads, so like Passthru said, you might want to consider that too if you plan to shoot it ALOT. The 357/38 option might be better if you plan to do more target than hunting. The recoil of a 38 is about perfect, and you can still use the 357 mags in it. 44
magnum loads are NOT fun to shoot, but definitely get the job done assuming you learn to handle the classic "trigger anticipation jerk" after a few rounds

Does no good to have a bullet that will stop a train, if you are going to miss because of a flinch when you pull the trigger.
Ruger website