Where are you guys finding this information. I don't see it. The dnr website says.
http://www.in.gov/dnr/fishwild/2362.htm
The changes to the rifle proposal and statewide sunfish bag limit were not approved by the Natural Resources Commission.
Besides that I found this.
Rifles with cartridges that fire a bullet of .357-inch diameter or larger, have a minimum case length of 1.16 inches, and have a maximum case length of 1.8 inches are legal to use only during the deer firearms and special antlerless seasons. Some cartridges legal for deer hunting include the .357 Magnum, .38-.40 Winchester, .41 Magnum, .41 Special, .44 Magnum, .44 Special, .44-.40 Winchester, .45 Colt, .454 Casull, .458 SOCOM, .475 Linebaugh, .480 Ruger, .50 Action Express, .500 S&W, .460 Smith & Wesson, .450 Bushmaster, and .50 Beowulf. Full metal jacketed bullets are illegal.
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.