A question like this might make them rethink what they carry. Do I carry the ultra small light weight easy to carry weapon. Or, do I carry something possibly a bit more uncomfortable to carry but a better choice in a fight.
The need to survive is the first order of business; duck and cover if possible. wait for the appropriate time if you are having an off day to take a chance and start shooting TO DEFEND yourself. Call 911 and notify them and assess the situation. But three against one, best case is get one (two if you are an old man is a internet poker room) and worse is be-gotten and a whole lot of shooting by all (if they have a working gun). Remember NO one feels your pain like you do!
As to hitting the target lets put that target at 100 yds, can you hit it with your P22 I'm betting Scott can.
But let all carry what they want and find to be right for them, be it .22 or .50, handgun, rifle or shotgun go for it and be safe.
I would draw my five-seven and hose down the closest mutt, the move on to the second and do him in... then transition to my M1A and shoot through what ever the last one has taken cover behind. How to explain all the innocent bystanders with 5.7, and .308 holes in them?... Thats collateral damage. It happens. I was in fear for my life... so I was justified.
Seriously... This IMO is a great scenario to consider. Things like this do happen. In a case as this I think a persons tactics would have a greater effect on survival, than the choice of rirearm. However I think the choice of firearm would dictate the tactics.
I will be down low trying to get to the back room of the store and dialing 911.
I don't want to engage anyone at this point, I am going to try and disappear.
If forced to defend my own life, my Glock-36 is always with me.
Time is on my side as these dirtbags want to spend as little time in the store as possible.
FWIW, I could hit at 100 before I put the RDS on the guns.
But I'm not afraid of using technology, either. So, I have a 9mm that I carry daily and can be used from contact distance to 100yds.
I make no apologies for what I carry.
Let's think this scenario over a bit. 3 BGs. Multiple customers. Didn't say where you were in relation to the BGs, or the other customers. I may infer you were pretty close to observe what was happening. No shots fired be BGs. All 3 armed. My first thought was to hand them my wallet and hope they don't find my gun(s). If they are concealed should not be a problem. If I start a gunfight, I will endanger the rest of the customers and store employees from my rounds and the BGs rounds as well. Remember the NYPD incident a few days ago? Can't wait until the BGs shoot someone to act, but chances are the BGs just want to get in and get out quickly. With the loot. Three against one works in the movies, not often in real life. Think about it. If I am forced to fire because the shooting has already began, then what happens next just happens. Hopefully I could find cover first and engage them. I don't want to sound like a sheep, just looking at a different side of this. Also, the choice of my weapon was made before I got there. Hope I had the SR9c and not the S&W airweight that day.