I'll second that, but only if you are practicing the right things.
When i reload a revolver (I hate moon clips, and do not use them), I invert the gun fully. One hand holds the cylinder in the fully out position, the other hand hits the ejector rod. I never have the issues you have described.
I was vague on what hand does what, because it really doesn't matter. If you like to eject them with your support hand thumb, while holding the gun with your support hand as well, have at it. It works fine, but it is not a technique I favor.