With the gun I referred to it will shoot the first round and eject just fine but when you shoot 2 rounds rather quickly it will not eject the 2nd round, We have tried all kinds of ammo, all new, no reloads, including the nickle cases, hot loads and not so hot loads, you can get the casing out very easliy just a small tap from a cleaning rod will do it, I guess there is an expansion problem or something.