Two cowboys played a strange deathmatch.

DeathMatch Rules:
1. They both need to fire 23 bullets in total.
2. They will shoot one by one.
3. They can shoot once or twice in their chance.
4. The one that shoots last i.e 23rd shot needs to fire bullets at himself.

If you are one of the cowboys, will you shoot first or second?

Cowboy Death Match Riddle

Shoot 1st.

Explanation:
> You Shoot once.
> Then shot opposite of what the other cowboy shoot i.e if other cowboy shots 2 times, you shot once and vice versa.
> After 15 shots, bullet remaining will be 23 - 1 - 7(2+1) = 1
> The other cowboy need to fire the last bullet