this is a video for wild ones but using cheat engine

download the cheat engine here...

:http://www.cheatengine.org/

if you can't follow the video,this is how you do

1.open cheat engine 6.0 and wild ones..
2.select your process chrome.exe (only use chrome)
3.go to practice and start any map you want
4.select any weapon except bazookka
5.put in the ammount of your current weapon and click first scan
6.then shoot and quickly put your ammo that left and click next scan
7.do the same thing until u get only ONE
8.double click the process on the left and it will go down
8.right click on it and choose "find what writes to this address
9.a box will appear and shoot one more time
10.choose the one with eax on it...
11.click it and choose show dissambler
12.double click at the top process
13.replace the "mov" to "add" and "eax" to "99" and click ok

14.HAVE FUN :D