They are mild steel so they get beat up pretty quick with rifle rounds, I'm really busting my ass to get the .50 holding a zero cause I wanna hit one of the 3" plates at 600 yrds with it.
I do have a 4 plate pistol rack I built with them that I might bring but it has always had a problem of twisting at the base and too heavy to move if I weld it into a one piece setup.
I wonder if they have any ammo restrictions? I have some new Brenneke Special Forces Magnum Slugs that allegedly penetrated 30+ inches of FBI gel and can crush an engine block.