If you are good enough, you could stand in the center of your friends pool, shoot straight up, and watch for it to splash down back into the pool.
Here's how I caught a bullet (accidently) just last week.
I was trying out several loads with the Nosler 64gr bonded bullet in a custom .223 rifle. A load of 26.0gr of CFE223 in Lapua cases proved to be fairly accurate while producing the highest velocity of the loads tested.
I always have a few bowling pins hanging from some rope at the 300yds line so I decided to slap one of them with the little 64gr bullet. At the shot I saw the pin move but not very much. When I drove down range I noticed that the bullet struck the pin dead center with about 65% of the bullet exposed on the face of the pin. The pin actually caught that bullet like a catchers mitt. I took a needle nose plier and easily removed the bullet from the pin. The nose was flat but the bullet was intact.
If you are good enough, you could stand in the center of your friends pool, shoot straight up, and watch for it to splash down back into the pool.
Bowling pins are made out of wood right?
Snow.
There is a field we shoot at out here for long range and in the spring after the snow melts we find all sorts of intact bullets on the frozen mud. As far as I can figure it, the deep snow slows down a bullet nicely. We make 'snow men' or pack down mounds of snow to set water filled jugs on for reactive targets in the winter. A little food colouring and it makes for great entertainment in the winter up here in Canada. We hide water containers inside the snowmen for fun. Anyway. On misses when the bullet drops into the snow and travels through it for awhile I believe it gently slows it down preserving the bullet. It's pretty cool to find an intact billet with only rifling marks on it.