Great Day Horrible day

[fredsbar1]

thanks to all who replied I do think mine is a little bent more than it should be but it does cycle. in fact possibly too well.also when i reassembled it this morning it did try the tilt test and it passed.
I went out and fired three clips of rounds through it from 2 different en-bloc's and all three times the first 5 rounds were perfect but when the 6th fired it also ejected the 7th with it unfired ,right out of the rife on 2 times and the third it was caught by the bolt pointing straight up so i checked the barrel and no blockages but of course empty chamber so had to recycle to load the 8th and it fired and ejected its brass and the en-bloc, anyone have any idea what on earth would cause this??? I did notice the op rod spring in it is approx 20.6 inches uncompressed and fired American eagle 150 gr FMJ M1 specific rounds