First you should learn how to spell before filling out the application. It is a felony.
I think if you are worried about a fine for a LOADED GUN, don't have a loaded gun in your car. Keep the ammo seprate from it, and if needed, you can reload it.
Jail
depend where you live (your local gun laws)
Gun shop, gun show, pawn shop, Blue Book of Gun Values, appraiser.
Gun shop, gun show, pawn shop, want ad
Federal prison time, fine.
Try gun shops, pawn shops, gun shows, e-gunparts.com
You have a fine gun. Condition, condition, condition. Used condition is fine. Abused condition is NOT fine. In reasonable condition this gun should fetch as least $500. Age is unimportant as to value with this gun. You'll require the serial # and a reference book to determine year of manufacture.
Check your local laws for a solid answer, but typicaly shooting your gun on private property is fine.
Neither. Both are fine weapons.
You could try asking them. I'm trying (and failing) to come up with any scenario in which it's any of your business whether someone who is legally allowed to own a gun does in fact own a gun or not. If they feel like telling you, then fine; if they don't, then that's fine too no matter how curious you may be.
Mine is 34 years old and is still a fine gun