I was reading this guide:
http://airsoftpacific.com/viewtopic.php?t=2845
and I've read it a couple times over now, and I get the impression that (at least in Portland) it's illegal to even shoot at targets on your own private property, unless you contact authorities first.
With that, wouldn't thousands of people around the Portland Metro area be breaking the law?
I see kids posting videos of their AEGs and such, obviously in city limits, and I sincerely doubt they called the authorities first every time they did anything.
tl;dr: Do I have to call the cops and tell them not to worry about me shooting a target in my back yard?