It sounds as if you have a question on the laws related to a firearm in a vehicle. The law varies from state to state. An answer that applies to Virginia would not necessarily be a correct answer for California or Texas. Packing.org has a SUMMARY of firearms laws for different states.
A loaded pistol is not a toy. Any game with a loaded pistol is foolish and unsafe.
Loaded or unloaded?
Impossible to answer- too many variables. It would require a penetration of the munition by fragments, or a fire in the same compartment as the munition. If the munition is loaded and the breech closed, it would depend on the intensity of the fire.
2.5 lbs empty 3 lbs loaded
2.5 lbs empty 3 lbs loaded
Yes only side arms
roughly 3 pounds
Yes
No way Jose. it can't be kept loaded or in reach. It needs to be in the trunk or it's a major bust if you are caught.
After a round has been chambered
There are some briefcases that do come with secret compartments. These briefcases often have a spring loaded compartment when actuated exposes the hidden compartment. This type of compartment is often used to store a hidden gun.
You need a lawyer.