If you go to Wally World you will see targets that are sized appropriately for different ranges and different calibers (Centerfire, rimfire, large bore, small bore) If you want to make your own, for 50 yds. I would draw a 6" circle and place a 1" bullseye in the center. As far as shooting freehand, that is a skill that is developed over many thousands of rounds! Correct stance and breathing take practice to develop. When sighting in, use a bench and a sandbag rest to eliminate all variables! That way when you shoot off hand and can't hit anything, you know it's not the gun..lol
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