I have used my share of spray and if you don't get it in the face/eyes, you aren't doing much to deter it. I think I would rather have my 40 cal Glock with a full clip.
I’ll go with the experts opinions every time….sorry….your chances of getting off a single shot much less a single shot that will disable the bear are barely less than zero….you typically won’t get off a 2nd one…..