Thanks for the thumbs up guys. I havnt added it to the CS mods yet as it still needs lots of tweeking.  Its actually so simple i surprised myself when it worked. first i made the m60 shoot straight down, changed the default fire mode to single and positioned it roughly in the bomb bay of the CS B52.

<Station name="Center" params="0,2,-1.5,0,-4.712389,0,51" />

Next i changed these lines in the <shell> section for the m60 bullets:

               <Weight>500</Weight>
               <!-- shell weight -->
               <TargetWeight>5000</TargetWeight>
               <!-- target wight correction factor -->
               <Lifetime>99</Lifetime>
               <!-- shell physical liftime -->
               <CtrLifetime>99</CtrLifetime>
               <!-- shell simobject liftime -->
               <Efficiency>1.0</Efficiency>
               <!-- shell damage efficiency             -->
               <RadiusRatio>2.0</RadiusRatio>
               <!-- See SDK -->
               <DragCoeff>0.5</DragCoeff>
               <!-- shell drag coefficient -->
               <OpArea>0.456</OpArea>
               <!-- shell net area -->

And finally i renamed some third party bomb models to the same as the M60 bullets, it will even work with default flour bombs. For some reason unknown to me i couldnt get the mk82 launcher to work but im sure one of you can.  I destroyed several parked ai aircraft during testing so it works. Feel free to improve this and submit it to CS mods, i hope someone will.    
                                 Regards Barney.