I have been thinking about hanging a gong. I was going to get a used disc from a farmer and paint it orange. If I do it I am going to drill three holes evenly spaced about an inch in from the edge and hand it with fairly heavy chain from two of the holes, probably just hang it on T-Posts, then hang a pretty long link of chain from the bottom hole so that the gong won't swing for long after a shot. I think keeping a hand full of the right sized chain repair links handy would let you rehang the gong quickly if you shot one of the chains. I wouldn't shoot it any closer than 100 yds I don't think though because of potential ricochet. What do you guys think how would the concave shape of the disc affect reicochet? Is 100 yds too close?