I've tried gunnery at convergence in increments of 25 yards, from min. to max. I've never seen a whole lot of difference. Max (650 yards) improves your chances in an HO. But HO,s usually come down to connex anyway. So that doesn't mean much.
What is very different, is the bullet drop of a cannon round, and a MG round. I would suggest using cannon only for awhile. Then when you get use to where they hit. Switch to MG only for awhile. (much less lead). Then you will know where to aim, depending on the type of guns you are using.
Also, there is an old saying in sim,s. Fly the plane, not the guns. If your bird is in trim, when you fire, all kind of nasty things happen to the bad guy

[This message has been edited by easymo (edited 01-18-2001).]