So this Friday I am going on a 4 day hike (mid cascades, WA), I have a 357 mag revolver that I recently bought. I haven't had much time to acquire the appropriate ammo. I know 357 is less than ideal for bear but its better than the 9mm I usually carry in the woods. BTW this is an absolute last ditch effort for protection... I have been able to acquire 3 boxes of ammo and want to know which would be best for black bear or mountain Lion. Hornady 140 gr. HP (polymer tipped) Blazer 158 gr. JHP PMC 158 gr. JSP I'm thinking the 158 jsp's for the most penetration, but I'm not sure. I know the 180 gr. or 200 gr. hardcast bullets would be best but there is no way I can get them before i go.