I don’t know about shooting from your back door, but in a lot of places it’s illegal to shoot from a vehicle.
In cities and suburbs there’s usually laws against it. In some places it’s something like you can’t shoot a firearm within 200 feet of a building or some such. But that’s more a local rather than state ordinance.
And in a lot of places it’s illegal to shoot across a road.
kayaker’s post above is very similar to Ohio law. In Ohio, you can hunt deer on your own land, but you still have to follow all laws & regulations, with the exception that you don’t need a hunting license or deer permit/tag if you own more than five acres.
I have bullet holes in my house to prove the idea “Yes” it’s bad juju to shoot game off the road.
It’s also incredibly unfair. The deer barely stand a chance as it is, at best armed with antlers against a rifle with a scope. Then someone wants to shoot them from a car? Might as well shoot them from a helicopter or send a swarm of drones to get them.
As a kid growing up in Wisconsin I would hear deer hunting casualty reports on the radio. As I recall the numbers would be about 10 gun and 10 heart attack deaths each year.
No idea what the current numbers are.
They also didn’t include car crash fatalities related to deer hunting. An uncle of mine died when his deer hunting buddy sped off a curve and flipped his car. Uncle was in the front passenger seat (no belt in those days) fell halfway out of the car and it rolled over him.
I recall a study done in Michigan on the root cause of most injuries & fatalities for vehicle-deer collisions. They discovered the impact of the deer wasn’t much of a factor. Instead, most injuries & fatalities were the result of the driver instinctively swerving after they saw the deer, in an effort to avoid hitting it. After the study, the State of Michigan initiated a campaign to tell drivers “Do Not Swerve!” if the see a deer in front of them; hitting the deer is safer than swerving.
Ah - the “Telsa maneuver”
https://www.reddit.com/r/SelfDrivingCars/comments/1gf20g8/tesla_using_full_selfdriving_hits_deer_without/
Um, that’s why you don’t do that.
I don’t hunt myself. But the thing I’ve nevertheless had drummed into my head about gun safety is that you never, never, never let that barrel point at anything you’re not willing to have a bullet in.
Yes, even if you’re sure it’s not loaded.
And never, ever, rest your finger on the trigger until you’re about to pull it.
I learned that as a tween when I pointed my brother’s cap gun, which he was not allowed to use in the house, at him and pulled the trigger, assuming it wasn’t loaded. I was wrong.
At least in this case, all that happened was a loud noise.
So many people who don’t know how guns work will take the magazine or clip, with the bullets in it, out of the gun and think that it is unloaded because you have all the bullets in your hand now, out of the gun.
But if it has been cocked or cycled there is probably a round still ready to shoot in the chamber even though you think you have them all out in the clip. A lot of inexperienced people end up getting shot this way. Cleaning the gun, pointing it at a friend as a joke because you are sure it is unloaded, etc.
Taking the bullets out of the gun does not make it safe. Removing the magazine does not disarm the gun. Even with hunting rifle without a detachable magazine it is better to remove the bolt assembly. Treat it as always being ready to shoot.
Also known as “keep your booger picker off the bang switch!”
Biggest rule: don’t brandish, tote, or have access to weapons if you’re not willing to shoot it.
If you’re unsure, that’s a hard No.
You don’t need to be the gun handler.
If you don’t know you’re proficiency, another hard, No.
A gun in unsure hands will be a weapon against yourself.
Always aim for the center of mass whether using a car or a rifle.
I’ve probably told it on the Dope a time or two, but I slammed into two deer standing in the road. Unluckily I was in a big loose curve. Lost control and flipped the car.
Don’t recall how many rotations.
Driving out here a few years by that time. Hitting the odd deer or 3. I knew not to try to avoid them by the time I saw them, I am sure I didn’t jerk the steering wheel. As much as I can be sure.
So, I’m one of that % whose experienced it, full on.
Statistics dont mean shit to you when you’re hanging upside down in your flipped over car, on the roadside.
I was driving up to Madison, WI from Illinois one Saturday morning to attend a football game. A fellow on the radio said, “It’s opening day of deer season. Today there will be more armed people in Wisconsin than the US had in Viet Nam at the height of the war!” 
Living in Wisconsin, and having contributed more than one deer into deer heaven, I have to say that the time between seeing a deer and hitting it is much too short to determine if you are going to swerve or not. The last deer I hit was launched about 20 feet skyward in less than one second.
Damage toll: 1 dead deer (priceless), auto grill & hood ($2000)
I clipped a muntjac while on my way to work one morning - the second one, which emerged out of the brush, because it was following the first one across the road (sex rears its ugly head). Ended up with a bunch of muntjac hair caught in the fender, but no other damage (to the car, anyway).
Or nuke them from orbit-only way to be sure.
