Search in Cheat Engine shots of your weapon.
Shoot until you are left with 1 shot and write in Cheat Engine 1 and press Next Scan.
Now you have many Address, Get those green.
Change the value of Address until all your shots change in game
The Address that changes your shots is what you were looking =)
sorry for my bad english i use google translate!
Thank you again.
as i said, i know find Address, the problem when i quit the game all Address not working, they changed.