If your range allows it and you like medium or long distance shooting, make a gong. Mine is 9" around 2 inches thick, weighs about 50 lbs though. I take it to the 400 and 500 yard makers which is the limit at my range. What I like is knowing right then if you hit it. You hear the bong a second or two after you shoot. At the end of my shoot I re-paint the gong so I can judge my pattern the next trip.
Retired Air Force