If a 15yr old boy was shot in the shoulder./chest would it kill him?!

If a 15yr old boy was shot in the shoulder./chest would it kill him?

Hey, just before you start to think i'm a murderer asking this, i need to know this as i am writing a novel and i want to know if it is possible or too far-fetched lol.

So, if a fifteen-year-old caucasian boy, who was in top physical shape, played heaps of sport and worked out so was therefore muscular, and buff in the shoulders, weighed about 120lbs, was shot in the chest/shoulder/collar area by i guess, your average sized handgun, from about 5m away, would it kill him? If his health was weak as in he was asthmatic and had had many operations in his life. And if when he was shot, he fainted but did not stop breathing and was not reached by ambulance assistance for about 15minutes? However, was able to have pressure applied to the wound by non-medic people present to help prevent blood loss?
Would he die? And if so of what exactly? Blood loss? Shock? And how quickly?

Please help me!
I will appreciate everyones answers!

Tasha

be cool if it were dramatic like he got shot and he was okay but hes in the hospital and when they have surgery for like infection or to take the bullet off the suregon is drunk and makes a mistake and the 15yrold is like in life support and he dies during a coma