I have tried a few different types of ammo, but ejection problem itself was pretty sporadic; it didn't happen every time, nor did it happen the same way each time. Sometimes the action wouldn't cycle at all, sometimes it would eject it halfway and close on it, other times it would get almost all the way out and close. 7/8 Federal shot in the transparent casings seemed to always work, though. This is the first problem I've ever had with this gun in the three years or so that I've owned it. That and the release button was too resistant so I replaced it with a wider external lever (best decision ever, it's [i]so[/i] much easier to load now; I think you can see it in the picture).