I've never noticed them circling forever.  It may take them a few revolutions, but they will eventually make a ridiculously sharp turn directly into the enemy hull.

That "bug"has rarely been complained about; it's so minor that it goes in the "Korsov only fires nukes out of 1 pylon" category. Would you really want the devs to spend time and money on fixing that versus things that actually affect gameplay? Or the even bigger graphical bugs? I realize some people really are bothered by such things, but I think this is one you should just try and get over.

If you make the missiles have a higher turn radius you should reduce the chance of that happening or ensure that it can turn fast enough to make it in a single loop. Alternatively you could tell the missiles to aim for the center of the target instead of any random mesh point, I suspect the loops happen when a meshpoint on the very edge of the mesh is selected for the missile to hit.

Hey mate, hope this thread helps...should fix your problem me thinks...