I too am thinking of building one of these contraptions. We just bought 43.5 acres just out of town to build on and hunt as well. I have a neighbor that is going to build as well and our house sites are going to be pretty close to each other due to terrain and utilities. I'm going to have a large shop with a conditioned reloading room built out in it and have thought about doing a nice covered porch on the rear to place a permanent bench. I plan to clear a range and add a berm.

My first thoughts were to take a couple 60gal plastic drums, cut small openings top and bottom, and line them with egg crate bed cushions or fiberglass insulation. Do you guys think the tire approach is a better idea?

Thanks,

loder