I'm doing research for a novel I am currently writing. My character is in his mid-thirties and in good physical condition. If he was shot in the left arm just below the shoulder by a 9mm handgun, and no bones were broken, how long would this take to heal? Keep in mind, he would not have gone to a hospital--this would have been healed somewhat crudely by a friend of his. Also, would this then leave a scar?