Hi Xman,
Thanks for posting your concern over cartridge selection, that tells me you are trying to be ethical in dealing with your problem.
As already stated by others....I believe under the conditions encountered while hunting a baited area...you would do well to leave the .22 back in camp.
My reason for suggesting this.... is not because the
.22 is inadequate to dispatch hogs. The problem... as I see it... lies in how "effective" it is likely to be under the circumstance (static).
Because the .22 is way down the "power factor" list...we are relegated to taking a Central Nervous System shot in order to cleanly harvest/dispatch the animal.
This basically means a "brain pan" shot (or something very close to it). As you know.. a hog (or group of hogs) will normally be quite active on bait. They are constantly moving...often unpredictably.
Even when standing still, the head and neck are moving as they root around picking up the bait. The shot you want.... represents a fairly small target and the chance the animal might move at the time you pull the trigger is significant.
For that reason...I generally discourage people from taking "head shots" (regardless of caliber) unless they are very experienced...or the hogs are in a trap.
I can assure you....I have no love for hogs, but I will not purposely do them a dis-service by using too small a cartridge or employing it under the wrong set of circumstances.
Again, thanks for your thoughtfulness...it reflects well on the rest of us who hunt.
Flint.