I have four AR500 plates that are 4 ft square. There are 3 target carriers with 6 targets frames on each one. Each carrier has a 4x4 plate on each end. Shooters get to sight in for 10 minutes immediately before their first relay in light gun and heavy gun. We shoot light gun and heavy gun in one day so it makes for a long and fast paced day. Shooting an extra target at the beginning caused us to have problems when the third and fourth relay which would be the first light gun target can not see bullet holes due to mirage and could not get sighted in.