The boys and I built a new steel target today out of some scrap we had around. The target is 1/2 inch plate that is 5"X6". We built it to fold flat for storage and transporting. The paint is drying in the shed when the pics were taken. It will probably take some refining but I think it will work out fine. Does anyone have any advice as to what calibers we should limit ourselves to with 1/2 inch thick steel plate?