There is no way I'd go to an unsupervised rifle range. I don't even like going to a supervised one. I'll get up my own out on the prairie and be done with it. I have seen things at rifle ranges in the past that boggle the mind.
among other witnessed feats of genious -
errant shots thru the ceiling
fired wrong ammo in rifle
fired rifle while others were down range
fellow was hiding behind target backer when range went hot
fellow sent child to pick up ammo that rolled off front of shooting bench
semi auto gunfight from a person unable to control weapon
semi auto gunfire from the hip
range caught fire due to unburned black powder left out front of the benches