A few years back the Department of Natural Resources in Indian decided to allow the use of rifles of limited size. Size of cartridge that is.
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 1.625 inches are legal to use only during the deer firearm season. Some cartridges legal for deer hunting include the .357 Magnum, 357 Maximum, .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, and .500 S&W. Of course certain wildcats fit this definition as well, i.e. 350 Indy (35 WSSM) and others.
Starting with the hunting season in 2012 the maximum rifle cartridge length that can be used in the firearm season has been extended to 1.8 inches. This means that the .460 Smith & Wesson, .450 Bushmaster, and .50 Beowulf will be legal to use during the deer firearms season.
The 358 Hoosier is a shortened 358 Winchester case that meets the new limits and is drawing a lot of interest. The 358 IDC also known as the 350 Indy is the 25 WSSM necked up to 35 caliber, this is a great use for WSSM guns that nobody seems to like. UPDATE: These last two have now been redesigned to meet the change in the rules, both are now available in 1.80″ versions. The Hoosier is designated 358 Hoosier 1.8″ and the 1.6″ versions still exists. The longer version of the IDC is designated the “358 IDC II”.
If you want to read the complete information check these links.