A deer's front shoulder covers about 1/2 of the heart and when selecting where to shoot, I aim for the 2:00 position of the front leg - placing the crosshairs straight up the rear portion of the front leg and squeezing the trigger when they are about 1" below the top of the shoulder.
Aim for the heart. If you're a little off, you still hit the lungs, anyway. Also, if the deer jumps the string, better chance of a hit if you aim for the heart. (imo)
Dave has a excellent point, however, I always aim for lungs but aim low in case the deer ducks at the release, actually they jump but they will be crouching when the arrow arrives unless its a long shot or they catch movement of your draw.
Like most of you I'm certain, I love to shoot my guns. I enjoy shot after shot all day long at the shooting range… whether it is with one of my Shotguns, one of my rifles, or with my handgun… or when the crosshairs are on a big game animal in a safe shooting scenario. I love to shoot! What I don’t have the same excitement about is cleaning my gun afterwards.Now this is not going to be gun cleaning 101 as every kit comes with its own set of directions and the internet also has a great deal...