Here is the Indiana law just to help guys that want to hunt there with a handgun like flags mentioned:
Handguns, other than muzzleloading, must have a barrel at least 4 inches long and must fire a bullet of .243-inch diameter or larger. The handgun cartridge case, without the bullet, must be at least 1.16 inches long. Full metal-jacketed bullets are not permitted. The handgun must not be a rifle that has a barrel less than 18 inches or be designed or redesigned to be fired from the shoulder.
Handguns are not permitted on any military areas.
Some handgun cartridges that are legal for deer hunting include .357 Magnum, .41 Magnum, .44 Magnum, .44 Special, .45 Colt, .45 Long Colt, .45 Winchester Magnum, .35 Remington and .357 Herrett.
Some handgun cartridges that are illegal for deer hunting are .38 Special, .38 Smith and Wesson, .38 Colt New Police, .38/200, .38 Long Colt, .38 Super, .38 ACP, .38 Colt Auto, .45 ACP, .45 Automatic and .45 Auto Rim. All .25/.20, .32/.20 and .30 carbine ammunition is prohibited.