Couldn’t find anything like this on the web, especially ones that denote how many shots it takes to kill with each weapon. So I decided to test it all out and put it down in one place. Check it out, if you’ve got any questions/commentary, by all means let me know:
http://www.thebalance.ws/2012/11/halo-4-multiplayer-loadout-weapon-gude.html
Enjoy!