Two to the chest, one to the head (with the 9mm sidearm.)
Also known as the Mozambique Drill.
However, I'd hesitate on a Mozambique Drill with four bad guys. That's 12 rounds total, but my house gun is a Glock 26 with 10 rounds. I carry a Glock 19 15 round magazine on the belt for a reload, but I can't speed load in 1.2 seconds like an IPSC shooter.
From the novel, Collateral Crimes:
Roberts said, “I see the dent from the magnum, but where did those other two come from?
“That bitch shot me with a 9.”
“Huh. Somebody taught her to double tap.”
Valdo felt his rib below the hole. He was sure it was cracked.
Roberts said, “You’re lucky she didn’t go Mozambique on you, shoot you in the face.”
Standard policy for our military.
CC