Sniper,
I looked at my spent casing again, and although it is deformed near the case head (end with primer), I'm not sure that it is deformed enough to be able to capture in a picture. You really have to handle it, and see it edge on.
I will note, however, that the bulge appears to be completely around the cartridge, and not just on one side (like you see with a GLOCK, and its unsupported chamber). I guess that's why it doesn't really bother me, it just looks like the case swelled a bit.
Perhaps "bulge" was the wrong word...
They still, however, are noticably fatter toward the rim-end of the case, strange...
-stunks
P.S. I thought it was interesting, my fired case was a "Geco"
P.P.S. I'd like to take you up on that offer to compare casings, Sniper, lemme know.