I was thinking of getting a 10" AR500 steel gong for the range. How safe is this useing FMJ 5.45x39, 7.62x39 ? What about steel core 7.62x54R and 8mm Mauser ? Is it better to hang by chains 90*or angle back some to defelct down ? Can you hear the hits 100m-200m away with muffs on ? Does having the gong closer to the ground make it safer ? Realy want to make sure it's safe more than anything. -Thanks