Seems like more than half of the pistol cases are 9mm and .45 ACP. I'm really surprised there is so much .45 ACP. Coming in in third place would be .22 LR I guess. Coming in at fourth place would be .40S&W. I really would have thought there would be more .40. Following .40 closely would be .380 ACP. Lots of rifle cases of various calibers. Which is odd because not that many people seem to be shooting rifles there. Maybe it just seems like there is a lot because they are larger. There are surprisingly few metal or aluminum cases. Rifle cases seem to have a much higher percentage of these than do pistol. I found my first 357 SIG case the other day. Just one. Ive been thinking about getting into 357 SIG but that fact that I recover very few of the cases that I actually shoot, since they go all over the place, I probably would run out of brass pretty quickly so I'm rethinking that. I really don't want to have to chase after every single case I fire. I have never found 10mm or .45 GAP. I've never noticed any revolver calibers either but maybe I've conditioned myself to ignore them entirely. You'd think there would be some since not everyone saves their brass.