I'm trying to decide how to build the firing point for my range. My original plan was to build a deck with a cover, then add benches for rifles and a flat area for pistols. I'll surround the right side with mesh to catch ejected cases. Now I'm considering building a frame from railroad ties and filling the area with pea gravel. I'd still build a cover and wrap with mesh. Seems like this might be a cheaper and faster way to go. The issues are that the ground has a slope to it, so I'd need to grade it for the gravel to work. The only way to get to it is down a trail that is just wide enough for a backhoe to barely fit through. I'm looking for something that will be long lasting and relatively low maintenance.