For smaller animals, it should be sufficient at short distances.
Yes, I suggest using Hollow point ( Hunting ) pellets
you kill a phantom by getting the phantom sword and then hitting them in the back
small rodents
There was no phantom in To Kill A Mockingbird.
It is not designed to kill a Turkey. It is designed for simple plinking and target practice.
Yes. ANY caliber gun can actually kill a person, but some calibers are more efficient at doing it.
Not normally but yes if the person is hit in a vulnerable spot.
Yes it can
The Phantom always takes away time from your Hourglass if you're hit. To kill it, you must obtain the Phantom Blade, which you can get Zaus to make for you if you give him the three pure metals (Azourine, Aquanine, Crimsonine). Once you have the Phantom Blade, you can sneak up behind the Phantom and stab it in the back to kill it. Often times, a treasure chest appears somewhere when you kill all the Phantom on one floor.
It could do it, although it wouldn't be the most "graceful" means of accomplishing it.
Any caliber can do the job. Most states regulate what can be used.