>>1022000YouTube us not exactly a reliable source.
A large study done in Alaska of 100s of bear attacks showed bear spray had a 99% effective rate of detering an aggressive bear. The study found no cases where bear spray was used, and someone was killed.
On the other hand guns had the same effective rate as doing nothing at all. About 80% effective rate. People who had no gun or spray had something like an 81% effective rate of detering an aggressive bear by just yelling.
While the study found not a single person killed by bears when using bear spray, and no serious injuries, they found like 12 people killed after using guns, and many more serious life altering injuries.
The study also found that using a gun, with all other factors eliminated, increased the likelihood a bear would seriously injure you. A wounded bear was found to be more likely to continue to attack.