Here is the First bottom line
"Although bear spray was 92% effective by our definition of success, it is important to note that 98% of persons carrying it were uninjured after a close encounter with bears."
Here is the Last bottom line
When people use a firearm as a first line of defense against a bear attack, only 68% of those people come away unharmed. 32% sustain injuries, and 100% of the bears get seriously injured.
Do the math, using a firearm as a first line of defense against a bear attack results in a 15X greater chance of being seriously injured.
Also, what was stated in post #21 about wind preventing bear spray from being effective has been proven totally untrue. Read this study, It is a solid product of the very best scientific research study our best bear experts have ever produced.
Am I anti-gun, no way. I always carry a firearm as a second line of defense when hunting or hiking in bear country, but bear spray comes FIRST. When on my two "live of the land" small game hunting adventures in Alaska, I always brought my 35 Whelen downloaded with 38 caliber lead pistol bullets for grouse and hare. It offered the second line of bear defense if needed with real bullets, which were always in my chamber until I was ready to shoot something for supper.
I used to live in Wyoming just south of the Grizzley filled Wind River Range. I hunted elk and antelope exclusively in the high mountain meadows surrounded by Aspen.
When hunting antelope, I used in my .270 super TUFF 180 grain round nosed Barnes originals with a SD of .332.
Regarding trusting a 9mm auto for grizz, as stated in post #21, Just ask any African PH how he felt about using a 9mm for lion.
Simply an unrealistic line of thought expressed in post #21
During my wanderings in the Wind River Range many decades ago I always carried a S &W 629, 44 mag with a max load of heavy hard cast bullets. And I was ever so grateful when bear spray came out. The 44 mag in a pistol is way less powerful than a 30-30.
I recall one late afternoon elk hunting in the Wind River Range, when to get back to camp before dark i needed to use a canyon elk trail on which I saw the fresh tracks of a sow Grizzley and her cub.
The track patterns of their toes and claws were unmistakable, fat, no space between them, and minimum arc unlike black bears.
I proceeded on the trail with my elk rifle, a 30-06 loaded with 250 grain Barnes Originals slung over my shoulder and my bear spray in my hands blowing my whistle.
The duration of most bear attacks is a couple seconds. Swat your face and leave. If ready and with bear spray in hand you can respond effectively sending out a huge circle of a powerful spray even up close.
Being able to do that with any firearm is pure fantasy.
MR