No that is your opinion!! And you are correct I have never hunted Brown Bear, but the bad thing for you is the lawyer across the hall spent 5 years as a guide in Alaska. He told me he ran into several know it all clients like yourself and would tell them to do it on their own, and that made me chuckle.
Here's a news flash for you.... I did ALL of my bear hunting on my own, i've never used a guide for bear hunting in my life... I've hunted big bears all over the south central coast of Alaska, onmany of theislands like Kodiakand alsoon the Alaska Peninsula... and the interior.
I started hunting big bears in Alaska inthe early 70's and continued untill the mid 90's... I learned a thing or two along the way, and used many guns/cals/bullets for all of my hunting needs...
I designed and mfg'd bonded core bullets, and sold them by mail order and through the gunshop i started and ran for many of those years... I do know what works, and what doesn't... I also had an ammo mfg license, and sold reloads and new ammo i loaded with my bonded bullets.
BUT, this isn't about me, it's about whether a 300 mag. is enough for brown bears, and i'm with James B and the others who say, "use good bullets" and you don't need a cannon... I've been saying it here for a long long time now because it's what has worked for me and many othersfor many years now...
KEY words..... choose the proper bullet!!
DM