1) In MA, it doesn't have to be unloaded.
2) Now you are starting to understand MA gun laws
Does anyone actually abide by these laws? And yes, this is a serious question - for instace, right now I can shoot on my own property, but state law says I must be 50 yards from any public roads, however, as most people here don't own vast tracts of land, the local police don't enforce this as long as everyone is playing safe.
Is this the same type of situation?