Saw some #4 at a distributors website the other day. They listed 9mm with #4 shot. They were out of stock of course but I put my name in the hat to be notified when they came back in stock.in CCI ammo the rimfire and 9mm have no.12 shot but the .38,..40, and .44 give you a choice of no. 9 or no. 4 shot
I killed a starling with a .22 shotshell at about 5-10 yards. Didn't measure it off bit it was on a power line near my house when I was many years younger. Did the job.What size shot is in the store bought capsules for 9mm and 10mm? I think they use #12 shot in the 22 shot shells, seems like #12 would be pretty small and lose energy quickly. I have CRS, but think I remember hearing 22 rat shot (#12) won't kill a rat an more than 10 feet???????
Bill