I'm thinking about getting steel targets (spinners, dueling tree) for practicing with my .22 handguns. My question is about the minimum safe shooting distance. The instructions on the targets state 25 or 30 yards minimum. Someday I hope to be a good enough shot to hit a 2" spinner at 30 yards but it's going to take a while. Do any of you have experience shooting at these kind of targets and what distances do you shoot at?