A couple of Alaskan guides with YouTube channels recommend 45-70s, hunting rifle calibers like 308, 30-06, 300 Win mag, etc. And large magnum pistols. There are as many opinions as there are people. So while, yes sometimes people have killed bears with 22s and 9mms, they probably aren’t the best choice. When I’m in bear country (Utah, Idaho, Wyoming) I take a lever action 45-70 and a 44mag with 300 gr projectiles. And a big bottle of bear spray. And keep the food sealed up.
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