Bear Won’t Go Down to 9mm Pistol Fire — 5ch: “.45 Caliber Superiority Was Just a Myth”

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The story

A video showing a bear that kept charging even after being shot with a 9mm pistol — and was only stopped by a shotgun loaded with less-lethal rounds — sparked a debate on 5ch’s “Nandemo Jikkyo G” board over whether the common wisdom that “guns can’t stop a bear” is actually true. Posters were split on whether caliber/penetration or raw damage is more effective at stopping a large animal like a bear, and the discussion even expanded to the stopping power of AK-47s used by elephant poachers in Africa.

What people said

9AnonymousSep 25, 2026 14:24
This is exactly why otaku shoot up schools in America
10AnonymousSep 25, 2026 14:24
Wasn't it supposed to be "guns can't stop a bear"?
22AnonymousSep 25, 2026 14:27
Re: #10
Aren't you getting that mixed up with the tranquilizer-gun story — like it didn't penetrate because of molting fur or something lol (also, nice one turning "mix-up" into a "condom" pun there)
23AnonymousSep 25, 2026 14:27
Re: #10
What are you supposed to do if the gun doesn't stop it?
11AnonymousSep 25, 2026 14:24
If it'd been Japan's New Nambu revolver (the standard-issue sidearm for Japanese police), that bear would be dead for sure
12AnonymousSep 25, 2026 14:24
No way.
There was a video before where a bear kept lunging even after taking a full mag from a handgun.
17AnonymousSep 25, 2026 14:26
Re: #12
It's probably a size issue.
18AnonymousSep 25, 2026 14:26
Re: #12
A hit to the torso gets blocked by the thick fur and fat.
But a direct hit to the eyes, ears, or brow will drop it in one shot.
32AnonymousSep 25, 2026 14:34
Re: #12
If it's an adult bear, it'll keep coming even after a shotgun blast takes its head off.
13AnonymousSep 25, 2026 14:24
As if a wimpy gun like that could kill it instantly 😭
37AnonymousSep 25, 2026 14:38
But seriously, even a gun like what Japanese police carry wouldn't cut it
since it barely even kills humans.
62AnonymousSep 25, 2026 14:58
Re: #37
No chance.
A gun with that short a barrel and that tiny a round wouldn't even kill a rabbit.
41AnonymousSep 25, 2026 14:42
Why'd they switch to a shotgun?
50AnonymousSep 25, 2026 14:51
Re: #41
Because it's a shotgun loaded with less-lethal rounds. In the original video you can see "less-lethal" printed right on the shotgun.
105AnonymousSep 25, 2026 15:31
Re: #41
Probably because it's a pump-action, right? Can't fire rapidly with that.
49AnonymousSep 25, 2026 14:50
A weak gun just doesn't work
54AnonymousSep 25, 2026 14:53
Re: #49
It's got enough power to stop a charge, though.
55AnonymousSep 25, 2026 14:54
Re: #49
That looks like it worked great, though.
52AnonymousSep 25, 2026 14:52
".45 caliber worship" was just a fantasy all along
74AnonymousSep 25, 2026 15:07
Re: #52
There are still cops out there who believe the .45 myth and carry one, so I guess it gives them a sense of security.
63AnonymousSep 25, 2026 14:58
Pistols are one of those things — think they're weak and they're not, think they're strong and they're not as strong as you thought.
Guess it comes down to the round.
72AnonymousSep 25, 2026 15:04
Re: #63
Placement matters too.
67AnonymousSep 25, 2026 15:01
So what happened to "police can't beat a bear"?
73AnonymousSep 25, 2026 15:06
Re: #67
.38 Special and 9mm Parabellum pack pretty different amounts of power.
78AnonymousSep 25, 2026 15:08
And yet African elephants get brutally slaughtered by poachers with AKs…
83AnonymousSep 25, 2026 15:11
Re: #78
Well, the AK's round alone packs seriously high power, so you probably shouldn't lump it in with your average gun. That's exactly why it's still in service today.
81AnonymousSep 25, 2026 15:10
Penetration or damage —
which one's actually better, I wonder?
84AnonymousSep 25, 2026 15:13
Re: #81
Are you dumb? Penetration, obviously. Leaving the bullet inside doesn't kill it (56す is leetspeak for "kill," used to dodge word filters), it just makes treatment harder.
90AnonymousSep 25, 2026 15:19
Re: #87
W-w-wait, an assault wwwwwwwww rifle wwwwwwwwww?!
Using an assault wwwwwwwww rifle wwwwwwwwww to cull bears?! wwwwwwwww?!?! wwwwwwwwwwww ("www" is Japanese internet laughter, like a string of "lol"s)
94AnonymousSep 25, 2026 15:21
So what was that thing from Golden Kamuy about bear skulls being too thick to penetrate?
102AnonymousSep 25, 2026 15:29
Re: #94
I think it was about the skull being so hard and thick that bullets ricochet off it.
109AnonymousSep 25, 2026 15:33
Re: #94
Even with humans, there are cases where a bad hit sends the bullet skating around the skull and out the other side instead of penetrating, so it's not that unusual.

Background and key points of this debate

Less-lethal rounds are designed not to kill but to stop an animal’s movement through pain and blunt impact; because they spread their impact over a wider area and concentrate kinetic energy at the surface, they can be more effective at halting a large animal’s charge than a penetrating pistol round. Pistol rounds, by contrast, tend to disperse their impact even when they do penetrate, often making them insufficient to stop the charging force of a bear weighing over 100kg. The idea that “.45 caliber hits harder than 9mm” was long believed within the U.S. military and police organizations, but recent ballistic research mostly holds that there’s no significant difference in stopping power between the two — meaning the thread’s claim that “the .45 caliber myth is just a fantasy” is close to the truth. This difference in energy transfer is also why shotguns and bear spray, rather than handguns, are generally recommended for bear defense.

*This article is compiled from excerpts and a summary of the 5ch (Nandemo Jikkyo G) thread “Bear-san vs. 9mm Handgun wwwwwwwww wwwwwwwww wwwwwwwww wwwwwwwww.”

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