Terrible pic.
Short barrel, large
[not Bolo] grip: Nice looking combination.
You only checked one fired cartridge??? You must have large cajones...I check five, all five single shot. Then two's, then three's. Then, if it's a Luger, I look around for the front sight blade...
I also like to check around ejection area, see if any brass marks.
Did any ejected cases hit you in the head???