as long as you have something in the mag that will limit it to 5 rounds you are okay. shotguns are a total of 3 rounds. They make plastic plugs you put into the mag tube that limits it.
For your M14, i would take the same advice given here. just make sure it limits it to 5 rounds. I was elk hunting last month with a muzzleloader and DOW came around, checked licenses, hunter orange, and gun compliance. Its the first time i have even been checked, but lucky for me i know the laws. he said he gives a lot of tickets for guys who dont have all there gear in compliance. There are a lot more DOW guys out there during rifle season due to the increase in hunters.

Also, make sure when you are driving you don't have a round in the chamber. the mag can be loaded but not one in the mag. Just read your big game guide free from walmart and you will be GTG.