Just ordered cheap 3″ and 6″ gongs. Want to grab an 8″ if the first two work out okay. I bet even these cheapies manage to hold up teaching the kids musketry with rimfires and handguns. Despite being 3/8″ AR500, I have my doubts about tagging them with the AR let alone my real rifles.
But a set of two or three with munting hardware should be a reasonably fun basic 50 yard shootin’ pit setup for not much weight or space. Also shounldn’t be too much hassle to set up and pack out.