Hi. I wasn't sure exactly where to post this. Apologies if this is the wrong board. Recently a question regarding steel targets came up. The question had to do with distance and thickness of the targets. I have both read and heard that usually it is suggested that the targets be 100 or 200 yards. (200 or 600 feet if my math is correct) and the thickness should be 3/8" AR500 steel. I have also heard that you should not shoot them with a rifle caliber such as .308, etc. Pistol caliber closer. Not sure about the exact specifics. Opinions, corrections?