Unless it's a crystal clear case of self defense or defense of others with numerous witnesses on the spot saying you saved everyone's life by shooting that mad man before he could kill others, the odds are really high you'll be arrested. If or morel likely when that happens, expect to spend *at least* a few hours in jail before you have an initial appearance and make bail, even on a shoot that is a legitimate use of lethal force justified as self defense or defense of others in the face of an imminent threat of death or serious bodily injury.

Even in a clean shoot, if you are arrested, the odds are high you'll still have $5K to $10K in legal bills before it's done and over with, even if you are ultimately cleared of any wrongdoing.

What an arrest means in terms of the other weapons in the vehicle is that they will be discovered during an inventory search after your vehicle is towed. As part of that inventory search they will be impounded just like your car. Unlike your car, they may end up with an inventory number in many jurisdictions. (Hopefully you didn't have something collectible like a minty Colt Python in the car if that happens. If you are lucky the person doing the inventory might be considerate and put the inventory number under a grip rather than on a frame, cylinder or barrel in a classy electro-pencilled scrawl.

In the event you are charged, even if released on bail you won't be getting any of them back until the charges are dropped or you are adjudicated "not guilty". (You will never be considered "innocent" again.)

----

I also disagree with the commenters above who suggest other weapons in the car will not be seized. If there is any suspicion at all that the shoot is anything other than exactly what it appears, the presence of other guns in the vehicle might be viewed as "evidence" of your state of mind and criminal intent. Consider for a minute the average mass shooter who shows up with multiple weapons and hundreds of rounds of ammo. You know, just like you'd take to a typical three gun match.

In addition, most LEOs are not gun people and many of them won't be aware of three gun matches and/or would not understand why you might in interested in attending one or view that explanation or while you are a rolling armory with anything other than a healthy degree of suspicion.

In fact, having multiple guns and lots of ammo in the vehicle may be enough to convince the officer to just arrest you anyway and let the state's attorney make the call, even if the officer thinks it's a good shoot. I don't know many LEOs who want to end their career by NOT arresting a shooter who goes on to shoot more people after being questioned and released.

I've seen numerous officers over the years who got excited when an armed citizens had a spare magazine or heaven forbid TWO spare magazines and then start asking who the now "suspect" planned to shoot with all that ammo. (Never mind the excited officer also has two spare mags on his duty belt and doesn't "plan" to shoot anyone on any given day.)

----

In short, don't shoot anyone on your way to a match.