I'm wanting to start shooting at longer ranges. The issue I have is that my backstop is at 75 yards, and I might be able to back off to 100 yards at most if I wanted to shoot out of the back door.
I have plenty of land to shoot on, and really there's not a lot that I could hit with a misplaced shot. The only real danger is a highway on the other side of a small valley. It's about 1400 yards away, and I would be shooting down into the valley if I shot in that direction. The other direction I would shoot in is just dense woods and rolling hills. Still, I want to be safe and shoot into a backstop. I do not want to add a permanent backstop though. It's expensive and would cause a few issues. I'd rather be able to set up a temporary/semi temporary backstop that could be removed if necessary.
I had an idea to just fill up a bunch of 5 gallon bucket with sand and stack them being the steel targets I want to shoot at, but it would take a lot to get a decently sized backstop, and moving them around would be kind of a pain. It's certainly doable. but by my math, I would need at least 28 of them, and they would each weight 65-70 lb. That gets you a 4'x5' backstop that weights about 1960 lbs. It would cost less than $300 to build though.
What are some other solutions? I've though about building a steel bullet trap, maybe on a trailer, but that going to be expensive to build. I'd like to find a solution for under $500.