None the less Rhinemetal propose just such an option with their PzH2000 and Dona, combined with a 155mm round using the same AHEAD tech as their millennium 35mm AAA /CWIS
That's interesting. I worked on the AHEAD trials when the RCA had a battery of GDF-005's. We envisioned using them in anti-anti radiation missile defence, where the operator in the SkyGuard FCU could over ride the gunners in the twin 35 with a 'panic button' that would slew all the troop guns on to the vampire and let loose a combat burst of AHEAD. It was something to see (and hear!!).
I'm really curious about a 155 AHEAD. To be used in an anti-air role, with a PzH2k...I think for it to be effective the round would have to be pre-loaded in the breech? Or something? By the time the air threat is spotted and data passed to the guns, the time it would take to load and slew on to the target, its likely well out of the range of the shell.
One of the reasons AHEAD works is that there are typically multiple barrels firing hundreds of rounds with thousands of tungsten fragments. A PzH with a comparatively low rate of fire (1 or 2 at best before the threat has say, turned slightly) , I'm just not seeing how it can be used in an AD role. Now, if you want to figure out how to employ AHEAD in an anti-pers role...*that* I could see being pretty nasty.