Depends on the range you intend to hunt at, and how your shotgun patterns buckshot.
Odds are you wouldn't want to hunt deer with buckshot much beyond 50 yards, because it's likely to be a significant spread by then, and while a clean kill is still certainly possible, you'll just damage meat unnecessarily. Again, the only way to properly/accurately determine the range limit is to pattern your shotgun with the buckshot you think you'd like to use. A slug
may be a better option regardless of the range, for deer. If you do choose a slug, you'll want a
rifled slug, as opposed to a sabot.
Here's some info on rifled versus sabot slugs, in rifled barrels versus smoothbore barrels, courtesy Box o' Truth.
I assume by the
magnum in the shotgun model, your shotgun can handle 3.5" shells. If so, you may want to consider a rifled slug in a magnum load (3.5" shell), but it might not be necessary. Obviously, as with any firearm you would use for hunting, you'll want to compare different brands of ammo to find what works best in your particular shotgun.
As for hogs, it depends on the conditions you expect. Many people who use shotguns for hog hunting like using buckshot, because it makes them feel more confident in dispatching an aggressive hog, if you should run into one. That's worth considering. Either a slug or buckshot will do the job - again, depending on your range. Keep in mind that less-expensive buckshot has a tendency to have softer pellets, meaning they'll be
more prone to "smushing" on impact. Conversely, higher quality buckshot tends to have harder pellets, which would result in deeper penetration. OTOH, if you're gonna be up in a stand, a slug might make more sense.
Just noticed this. If you use shot, you'll want buckshot. I'll try to find the shot-size chart for your viewing pleasure.
ETA:
Note that
BB in the top row is the same size as
BB in the middle row, along with any others that are listed twice. The bottom row is all "buckshot." You wouldn't want to hunt big game with anything in the top two rows. Generally, "target" loads are limited to size 7.5, 8, or 9 shot.
Also,
this is a
THR thread about using buckshot for deer hunting. It's worth a read.