Yeah I'm mostly concerned with the .22 lr abiltiy to travel a mile and a half, looking for around for plinking and informal small game hunting, bunnies and squirrels... .
As others have said, 22 shotshells are only a hair away from being useless. I have some, but I don't know why. They won't penetrate much of anything and will shoot a donut shaped pattern unless you have a smoothbore.
I've heard that some stunt shooters used them to do tricks. Joining the circus?
You should be using hollow points for small game anyway and they won't survive much of a deflection. There are very few places where you can fire very far without something, even a small branch, deflecting or stopping a bullet. Once it is deflected even a little, tumbling and no longer spinning, it's gonna hit the dirt soon. The squirrel's or rabbit's body will make the bullet destabilize.
Understand that 1.5 mile figure is probably the absolute worst case scenario, firing the rifle at 45 degrees or so (mathemeticians help me), with a tail wind, from a higher elevation down a steep hill etc.
I would guess under normal circumstances shooting at roughly parallel with the ground I'd be surprised if it would go more than 300 yards. There aren't many 300 yard stretches of clear land where I live. When I shoot my 22 on a rifle range, I run out of elevation on my scope before I can dial in a hit on my target.
I remember seeing a video with a guy shooting at some long range (500?) and the guy was using some SERIOUS holdover. Gravity is your friend as is the fact that even small bits of cover will stop a 22.
BE CAREFUL, don't get me wrong, but you don't have to be paranoid.