I'm not sure what exactly you're asking for, but basically all the information you'll get can be found on pages
like this one, or
this one, and the
IGLOO pages as well (Although I wasn't aware that had been named Magella Eins, I thought it was still called the M-1!). Other than that fairly basic weapon info, we don't really know jack about how they work or anything like that.
As for tank aces, unless IGLOO included some, I don't know of any. Not that there should be a great number in any event, as the Federation Type-61s were largely cannon fodder for Zeon mobile suits, and every Zeon ace I've ever heard of was in those mobile suits and I can't recall any of them ever being associated with tanks.