Straight from
PA Game CommissionSec. 2308. Unlawful devices and methods.
(a) General rule.-- Except as otherwise provided in this title, it is unlawful for any person to hunt or aid, abet, assist or conspire to hunt any game or wildlife through the use of:
(1) An automatic firearm or similar device.
(2) A semiautomatic rifle or pistol.
(3) Reserved.
(4) A semiautomatic shotgun or magazine shotgun for hunting or taking small game, furbearers, turkey or unprotected birds unless the shotgun is plugged to a two-shell capacity in the magazine.
(5) Any device operated by air, chemical or gas cylinder by which a projectile of any size or kind can be discharged or propelled.
No semiautos. If you CCW with a 1911 and carry it with you hunting, you can be in big trouble. Hunting in PA = bolt/lever/pump type rifle and revolver. Shotguns as stated above can be semi auto as long as they are plugged.