Re: Red ball mod
most red ball mods are used with the thicker tracer mod ,
what you need to do,
when on certain maps you can bet your house that if there are two arty on enemy team your going to know roughly where they are correct?
unless the arty is french or low tier brit they will not move far from start point , you need to zoom out and watch an area,
dont zoom out to far or you will not see the tracers , there is a type of sweet spot that gives you maximum view window , you need to find this.
if you are a student of arty play , you should also roughly know the reload times of the enemy arty , remember arty likes to fire as soon as its loaded so you can predict when the next shot is coming from him,
keep watching and scanning the possible arty locations , a lot like fishing you will get a bite 
and if you have the firing arty in your view window you will see a little red ball appear, aim just behind this and bingo!!!!
enemy vehicle is destroyed
you really need a redball that uses the tracer mod or comes with it.