When I was 14 I got into a locker room fight with a kid my age and he got hurt pretty bad... I was sentenced to 12 months in juvenile detention and actualy served over 9 months...then had 6 months counseling when I got out and 2 years supervised probation....
The kid I hurt is still alive today...
so, maybe a lil soft for shooting someone although a sentence of years of confinement would have been unreasonable IMO...
say 8-12 months...long enough to get his *censored* pushed in...

proper punishment for killing somene while they are on a peaceful nature hike IMO