No, there is no restriction for rifles on private land for small game. The rifle/caliber restriction is a deer regulation. Just make sure the property owner gives you permission to be there. Common sense should always play a part though....if it's a 2 acre parcel in the middle of a development I strongly recommend you not go in there with a .223, 22.250, 30.06 or something similar. While it may be legal it will just upset the neighbors who will probably call their legislators, and you know how things can go sideways at that point.