Never really hurt because shock is your friend!
I still whine sometimes though.
I have been told that it didn’t sound like a gunshot but an explosion. Also that I just stood there for awhile as we all tried to take it in. The first thing that went though my mind was, “damn, I just blew up El Roy’s new Garand!” Then I realized that it might just be a bigger deal than that. I noted that I could see fine and I could hear people freaking out behind me so the ears were okay. I was standing without being dizzy or affected in anyway way so I realized it wasn’t so bad after all.
I looked at my arm and understood that what I was seeing wasn’t good but I have seen me bleed worse so what the heck.
It was pretty surreal actually.