Doyle said:I believe it is more than just simply "rifle in pistol calibers". I believe there is also an overall case length restriction.
Yup. From the 2008-2009 Hunting and Trapping Guide under Legal firearms [for deer]:
Rifle with pistol 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 deer firearms season. Some cartridges legal for deer hunting inlude 357 Magnum, 38-40 Winchester, 41 Magnum, 41 Special, 44 Magnum, 44 Special, 44-40 Winchester, 45 Colt, 454 Casul, 458 SOCOM, 475 Linebaugh, 480 Ruger, 50 Action Express, and 500 S&W."
This is in addition to shotguns (.410 bore, 20, 16, 12, or 10 Gauge) with slugs or sabot bullets, muzzle loaders of .44 or larger loaded with bullets of .357 or larger, and a somewhat more inclusive list of handguns (although my 1911 is not legal for deer).