If you're in the city, then throwing lead is a no-no, and too noisy to boot. 100-150 feet? Crossbow would work.
The city limits line runs right along my property line about 50 yards away. I'm not too worried about the noise or anyone reporting me. I just worry a little about a bullet ricocheting off the water. The nearest neighbor in that direction is about a 1/4 mile away. Pretty small chance of harm, but probably not zero. The crossbow idea sounds interesting. That could lead to a whole new obsessive hobby.
![smile smile](/images/graemlins/default/smile.gif)
Google beaver castor mound set.
Thanks. Those videos were fascinating. I guess trapping is a lot more complicated than I ever knew.