I'm new to this, and I've been reading about some things you guys shoot, and wondering how much it takes for the bullet to ricochet, I see you can shoot a refrigerator, metal targets.  Maybe I'm just used to pellet guns.  How much of a backstop would I need to stop the shot at about 200-300 feet?  I used to shoot out back of my house towards a field, now someone built a house back there, it wouldn't be shooting directly at the house, but still towards their property. A mountain of sand bags? Bails of straw?  Thanks guys.

Rent a backhoe for a day and build yourself a nice tall berm of earth. Hell around here now you can rent a mini backhoe from homedepot for $240 a day.