I think after reading all that I've read online, I have no reason to say anything to an officer if it's in the trunk, in a case, unloaded. They can see I have a concealed weapons permit when they run my ID, and if he asks me if I have a weapon in the car, I'll gladly tell him that there is one in the trunk. I never carry anything on me while I'm driving, or in the glovebox, so it's all well out of reach.
I could see instances when you run into the wrong cop in the wrong town (i.e. a rich yuppy town like Lake Oswego or West Linn, Oregon) where they would go bonkers just knowing you had a rifle in the trunk and probably want to detain you for an hour or two, only because it's probably the most exciting thing they get in their neck of the woods short of a teenage girl attempting suicide for attention because her Mom didn't buy her the Juicy Couture outfit she wanted.
I could see instances when you run into the wrong cop in the wrong town (i.e. a rich yuppy town like Lake Oswego or West Linn, Oregon) where they would go bonkers just knowing you had a rifle in the trunk and probably want to detain you for an hour or two, only because it's probably the most exciting thing they get in their neck of the woods short of a teenage girl attempting suicide for attention because her Mom didn't buy her the Juicy Couture outfit she wanted.