IANAL so take this with a grain of salt. The laws basically talk about going from a residence to a place authorized for you to have it. My company is a small office and there's a nice range by it. I asked my boss if I could bring my Firearms to work, if he said yes then that would meet the authorized place rule. So does your dad have Firearms? Is it OK with him? It would still be questionable.

The real answer is the only way they would know you were making an unreasonable deviation is if you open your mouth. The law says the officer needs to ascertain where you came from and where you were going. The law also clearly says *you are under no obligation to divulge that*. The law says its up to the prosecution to figure out if a crime has been committed. So don't say anything.  Say yes sir no sir. Anything past that you answer "I don't want to answer questions without a lawyer".

You might get a ride but you'll beat the wrap. The key is make it plausible that there's a place for you to be going you could use your firearm.

I have a friend who is a cop and I asked him specifically about this. He answered "don't do something that makes me think your transporting drugs. That's the number one reason I'd search your car. Otherwise I'd never know you had one"