Ah, yes, Dave, we are all responsible for those sort of acts! I remember the relative dimensions of the PIAT to 25-pdr boxes well because by the time I got to Plumies in Benalla and Albury, I couldn't get enough of all the same sized boxes, and had to settle for a mix of the two sizes, plus the smaller 25-pdr cartridge boxes. Apparently, someone in a Chev modified conventional had pretty much cleaned them out!!!
Having the mix of sizes as storage was a pain: I didn't have enough of any one type to make up shelves, so settled for open Handy Angle shelving. Those were the days. Now I just have to store paper ..... but the US has different sized paper and folders! Even the paper punch has a different spacing. Just can't win....
Mike C