Viking Solutions Combination 6" and 10" Complete AR500 Steel Target Set

Had a few problems when we took them out for the first time today. The 6in gong was placed at 100yd, and the 10in was placed at 250yd. On the 6in gong, there is now a large divot near the edge, along with a smaller one nearby. The washers were on the small size for the chain provided, and one was pulled through the chain loop, with the other one nearly suffering the same fate, but at least this one came with nylock nuts. The 10in gong on the other hand, did not come with nylock nuts and a couple times the nuts, which were tightened before hand, came loose and the target fell.All calibers shot at them were within the range of what they are designed for. 22lr/9mm/45acp/5.56/30-06/6.5 creedmoor. I don't know why the 6in gong has a divot in it now, but beyond that, the targets performed fine, just expect to upgrade the hardware.