Recently on a farm shoot I decided to build a backstop (butt) purely for zeroing, first attempt was sandbags, 20 of them it looked impressive for a while but after awhile the bags got pretty chewed up and started collapsing, latest thought was old car tyres staggered on top of each other and filled with earth to form a wall maybe 3ft high by 8ft, what do you think has anyone tried this idea?
Rgds Rob.