That is what I am working on, trying to figure out that ratio. Right now, with the numbers I ve recorded about 55/45 10 1/2 guns in the lead. I've seen supposed production numbers about different barrels lengths published somewhere, don't know where they came from though. First maxi's produced, which include all the low number guns are 10 1/2" Last ones out there, which were all produced in March of 1983 are 7 1/2" guns. I doubt that there are any guns out there that were actually produced in 1984. But if you have one that letters as such I'd like to know about it! You see, Ruger destroyed almost 5000 Maxi's. So there were only about 11,500 shipped out of a total production of around 16,314. Coogs.