Sure, I've done it a couple of times.
Here's the most recent. I posted links to the sources of my numbers
here.
Bear in mind that I'm looking back to project forward. My predictions rely on two things:
- DV4ROGER's estimation of a quota of 831 visas for OC.
- Last year's rate of visas issued per CN. If that rate increases, the final cutoff goes down. Hence my trying to read the entrails of the CEAC data. If it helps any, the rate has been increasing steadily over the past few years. To give you some idea, if the rate increases from 0.526 to 0.538, the final cutoff would be 1545 instead of 1580. (That's the difference between me being in and out of the race.)
Hope that helped.
Edit: For what it's worth, the issued rate so far is 0.3676 visas per CN. This time last year, the rate was 0.3239, which might go some way to explaining why the visa bulletin has been slower in progressing vs. last year, despite the higher quota. Or it might not.