JohnK & MalH: You will always hear different comments from those of us who train with their revolvers versus comments from recreational shooters who don't. In otherwords, a casual shooter will never experience these issues first hand unless they practice strictly in a defensive setting while performing speed and tactical reloads under stress.
But to elaborate on my original comment using a Ruger SP101 as an example: If you release the cylinder and press the ejector rod to its full extention and then grab the extractor star, you'll notice that there is a considerable amount of play in the unit as you wiggle it back and forth. This 'play' is what usually allows cartridge rims to slip underneath the extractor star during ejection as the two inside most cartridges in the cylinder impact the grip panel on their way out. Yes, I have experienced this issue many times with both the Ruger SP101 and the GP100 regardless of what manual of arms was used, be it the old FBI technique, the FLETC technique or even the LFI technique.
From this, I have come to the conclusion through personal experience that Ruger revolvers are not the ideal choice for defensive use and are best left to the recreational shooter. Of course, as always, your opinions and milage may vary.
edit: typo