If you live in the inner city then yes. Rural areas, not so much.
It is, but you need to check with your developments rules. If you are to close to a building or public place, you could be arrested. If you live back in the woods, you should be fine.
No. Because, in order for you to shoot them you would have to get their permission to shoot them. If you accidentally shoot somebody inside your backyard without their permission, it is their fault for being in the yard with someone that has a paintball gun and is shooting it in the first place.
i think so
No
It's not legal.
Yes, if you only shoot your property.
Yes. As long as it is on your property and not shooting at anyone else's property.
yes
It depends on your area. If you are located in a busy city or town, then it is not. However there is no problem with shooting your paintball gun in a wooded area.
Yes, whether it is legal is another question.
This all truly depends on the area you are in. New Jersey has mostly urban cities, therefore it would be difficult to shoot it in your backyard without being unsafe. To make life easier, go to a paintball field.
Only at a licensed paintball facility, NOT in public.
its not illegal just pretty stupid