A top choice for harvesting game would be a combination gun.....that's a gun with a rifle caliber and a shotgun all in one.....simple break open action and operation.....it won't scare anti gun governments as it a hunter's tool....

The best of the lot is the Savage arms model 24.....they come in various caliber/ga. combos but the .22lr over 20ga is the handiest....you'll be able to take small game , birds with the .22 and up to deer sized animals with 20 ga. slugs....

Unfortunately this fine gun has been discontinued after a long run.....there are plenty on the used market and other companies make a similar gun....these guns are not flashy but very useful....