Years ago when I was stationed in Nebraska I did a lot of pin shooting at the base range. Yes back then they let us use the base range for recreational shooting. It was a lot of fun not to mention pin shooting is a very practical way to practice defensive shooting. I used a 1911 in .45ACP or my S&W 586 in .357. As for where to aim I always kept it simple and aimed for the fattest part of the pin.