Bear spray has been proven to be more effective than guns...
. But if I was dealing with browns on a regular basis I'd carry bear spray as a backup in case my gun went dry.
What were the firearms in the study? 9mm Luger? 38 SPL?
For the study to be useful to me personally, I would need to see a study of "Effectiveness of Bear Spray VS. effectiveness of 445 Supermag."