I never had any trouble with my Axis in .223.

But, my 12BVSS in .308 started getting bad about ejecting rounds after about 2000 rounds. It would 'drop' the case when the nose cleared the chamber (case neck still in the lug area).

My solution? Removed the ejector. :) Yes, I only shoot from a bench and no timed shooting. I consider this a "feature" since now I can simply pluck the cases from the action.

And, yes, the larger ball 'fix' would probably work for me, but, I don't need it anymore :)