If you only shoot your property, on your property you will be fine.
If you have the equipment, yes. Although you may want to ask if it's legal.
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.
No.
As long as you shoot it on your property at your property.
Depends entirely on where your back yard IS- and the local laws.
Yes it damages property so it is vandalism. Vandalism isn't always a felony, plus shooting a paintball gun isn't necessarily illegal. It depends on the circumstances.
its a marker, not a gun. So technically if there are gun laws they don't apply to paintball markers. Now if there were laws against painting, then no you couldn't. But then again the paintballs have biodegradeable stuff in them and are not considered paint. Are you trying to ask if you can expel dishsoap in your yard with a dishsoap marker? That's what it sounds like to me.
in your own back yard, airsoft guns are legal on your own property to shoot, as long as your not shooting someone else who doesnt want to. its perfectly legal to shoot and use any airsoft gun no your own property.
In this state it is illegal to shoot a gun inside the limits of any incorporated municipility. It is illegal to shoot a gun across any road. It is illegal to shoot toward any house. It is illegal to shoot toward any person. It is illegal to shoot without a license other than at a range or for a child under the direct supervision of an adult with a license. It is extremely easy to get a hunting license. The state makes a whole lot of money from people walking around with a gun who do not have a valid hunting license. It also makes a whole lot of money from the resale of their guns. You can get good deals at the public auctions. Whether or not it is legal to shoot from your back yard depends on where your back yard is and what is behind it.
Of course not. Trespass is not sufficient reason to justify deadly force.
yard sale, ebay, craigslist, etc...
Yes, it is, as long as you have something to shoot at. New York State Law says that it is legal to shoot arrows in a backyard as long as they are manufactured by these certified brands: Lil' Sioux, Easton, Arthur Outdoors, and Talon USA.