God I hate that scope!
My Intervention kit is the regular scope + FMJ + Stopping Power Pro. Anything but extreme distances is a 1 shot kill and extreme distances a head shot is a 1 shot kill.
For S&D I use the M21 because if you silence the Intervention it's no longer a 1 shot kill and the recoil + reload is too high. M21 silenced is tap tap dead with little recoil.
Otherwise I use the Tar-21 or ACR + Cold Blooded Pro & Ninja Pro with silencers for S&D or stopping power on other modes.
I also like to have a marathon pro, lightweight pro and commando pro class setup with the UMP.
UMMM for heavy artillery I've got the AUG setup with the lock on missile launcher. I forget what I have my other custom classes set as. It's so nice having 10 spots