10mm vs 45 ACP +P for bear defense according to the owner of Buffalo Bore


An important detail he put it there in a fashion to make others glaze over it.

He pretty much says several people had already shot the bejeebers out of the bear first and THEN he got four strategic shots in for the win.

Not nearly as compelling as story to as it would have been had his been the ONLY shots at the bear.
 
Therefore, a hit or two with a marginal cartridge is always better than a miss with a cannon.
You can't say 'always.' Should have gone with a weasel word such as "usually."

Here are two quick examples that are exceptions. The first is a group of young hunters shooting a grizzly continually during an attack, not just one or two times, and the grizzly didn't care...until it finally succumbed.


The second is a guy who just fired a warning shot which was enough to scare off a sow and cubs.

https://www.whiskeyriff.com/2024/01...ot-to-stop-charging-brown-bear-in-its-tracks/ (interesting story, his gun jammed after the warning shot, so it was lucky the warning shot worked)
 
I'll just throw in a few thoughts after reading these posts and watching a few of his videos lately:

1. He's 67 years old, he probably can't sit comfortably in front of a camera for very long. I doubt he gives a rats .... what anyone one thinks of his house or anything else. He's also a little new to making videos, so he's probably experimenting with different sets, angles, and delivery. Him walking in from outside during a video doesn't mean anything one way or the other. If that's all it takes to make you disregard what someone with his credentials is trying to tell you, you probably shouldn't be playing with guns. He's made enough money at this point that he probably doesn't have to sell another box of ammo. He's doing these video's to educate, address myths, and explain the details.

2. He says in one of his videos that his minimum for Grizzly is .454 Casul and prefers .500. He's only comparing 10mm and 45acp because that seems to be the hot topic. He sells plenty of both so I don't think he really cares which one you buy or don't buy, he's just trying to clear up misconceptions.

3. He also says in one of his videos that he owns about 3 dozen various Glocks and quite often carrys one when he is Black Bear only territory. So he is not against Glock or 10mm until it comes to Grizzly.
He's giving his personal opinion about preferring his revolver because he's practiced with it and knows what he can do with it. He's not saying everyone needs to use a revolver. Many folks just can't shoot a .454 or larger revolver.

I totally respect his opinion and experience. I'm not that practiced with magnum revolvers. I also shoot my G20 a bit better than my G21, so if had to go in Grizzly country tomorrow, I'd probably still take my G20. That doesn't mean I discount anything he said, it's just my preference.
 
If I knew I were going to be attacked by a bear, I would try to be somewhere else. If I HAD to go anyway, I would choose a long gun over a handgun. If I HAD to go and I HAD to carry a handgun, I would pick something that had enough penetration to have a good chance of being effective and something that I shot very well and reasonably rapidly. One thing that seems to be very common in bear attacks that involve handgun self defense is that multiple shots are fired in a hurry. Given that state of affairs, there's no way I'm going to pick something that handicaps me unduly in terms of being able to get rapid follow-ups on target. Carefully aimed shots seem to be an uncommon luxury in bear attacks. Besides, why go crazy with massive power when I have it on good authority that energy is totally meaningless. Based on that logic, it's clear that given adequate penetration, a non-deforming .40" bullet is actually better than a .375" solid and I don't think there are many who would argue against .375H&H with solids as being inadequate for bear. "

Now, if we're talking about handgun HUNTING for bears, that's another story. I'd want someone to back me up, first of all. Then I'd pick a heavy caliber with deep penetrating ammo and plan on taking one very carefully aimed shot with much less concern about the ability to place a rapid follow-up.
But with a marginal cartridge, your likelihood of needing followup hits goes up.

I never understood the logic behind a lesser cartridge for defense than hunting. In the world of dangerous game, it's exactly the opposite. You may take your initial shot with a scoped .375 but when you have to go in after a wounded critter, you pick up the .500 double. If I wouldn't hunt with the cartridge, I sure as hell wouldn't count on it to stop the critter once it's enraged.
 
But with a marginal cartridge, your likelihood of needing followup hits goes up.

I never understood the logic behind a lesser cartridge for defense than hunting. In the world of dangerous game, it's exactly the opposite. You may take your initial shot with a scoped .375 but when you have to go in after a wounded critter, you pick up the .500 double. If I wouldn't hunt with the cartridge, I sure as hell wouldn't count on it to stop the critter once it's enraged.

Self-defense is a surprising, fluid and organic situation. Hunting is not, for most cases. In one instance, the animal is the prey, in the other I am the prey.

I'll take a SD handgun that is quicker to get into action and has a capacity to allow for quick follow up shots. Too many verified wilderness SD instances of many shots needing to stop a bear threat and those include the so called "one stop magnums."

Count me as a person who would hunt with my scoped 454 Casull, but carry a Glock 20 for wilderness SD.
 
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Self-defense is a surprising, fluid and organic situation. Hunting is not, for most cases. In one instance the animal is the prey, in the other I am the prey.

I'll take a SD handgun that is quicker to get into action and has a capacity to allow for quick follow up shots. Too many verified wilderness SD instances of many shots needing to stop a bear threat and those include the so called "one stop magnums."

Count me as a person who would hunt with my scoped 454 Casull, but carry a Glock 20 for wilderness SD.
Yes, I've heard all the justifications before. I just don't think they're logical. IMHO, this is people applying self defense logic to something 10x bigger than the average human. Follow-up, follow-up, follow-up, heard it a million times. It doesn't mean much if you're using a marginal cartridge, where each bullet is incapable of stopping the threat. In other words, a broken shoulder and destroyed heart/lungs with one deep, solid hit is exponentially better than 10 minor wounds. People hunt elephants with .500's, not AK's.

Couple that with the increasingly prevalent idea that all defensive handgun cartridges are the same, why are people going heavier than 9mm to begin with? Is it because the 10mm and .45ACP are more effective? Well, which is it? Are they all the same or are the bigger cartridges more effective? It can't be both. This reminds me of my grandmother. She would take an Advil at night to settle her down to go to sleep and then another in the morning to wake her up. It's one or the other, not both. Seems to me the logic is what's "fluid and organic", it changes with the intent. Which makes it not logical at all.

Hunting versus defense should at most change the platform, not the cartridge or its capability. These are both .44's but in truth, the defensive gun should be a .475 or .500. Not a freakin' Glock. Bottom line, as I said, people are choosing lesser equipment because it's easier. Which is fine, just admit it. It should be a deliberate, conscious choice.

Hunting:

1743178366683.jpeg

Defense:

1743178380831.jpeg
 
@CraigC I used to own a 454 Casull Alaskan but sold it, as I determined for my own proficiency and weighing it's quantifiable pros/cons my Glock 20 provides a greater advantage in my eyes. I still have a scoped SRH in 454 for handgun hunting if I were to ever get into that with regularity. The difference between shooting that 454 Casull Alaskan and the Glock 20 on time to target and transitions between targets (like example below) cannot be refuted, at least with my abilities; maybe not the case for you.

I subscribe to a caliber that provides good penetration and power, in a platform that is easy for follow up shots. I'm not counting on a few shots getting the job done when faced with a charging animal with bad intentions. I want several wound channels in order to up my odds on hitting the life giving parts, and/or to break down the animals means to fight.

I understand your idea of wilderness defense is 6 shots of 350+gr, whereas mine is 16 shots of 200-220gr. I like my odds in a controllable, fast follow up shot, ease of transition as the animal bears down on me side to side to get several wound channels making their effect.

Guess we'll have to agree to disagree. Which is alright. I respect your opinion.

If I'm going to be charged by a bear I want to have at my capacity enough shots to ensure some hits to a charge.

Drill for Bear Defense.JPG
 
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You're focusing on the wrong thing, capacity, as if the target is a human. A 10mm or .45 is fine for them. The problem is that they lack the capacity for a bullet heavy enough to ensure adequate penetration. I would not count on a 220gr 10mm or a 255gr .45 to reliably provide that. Those are deer bullets. In the revolver world, a 250gr at 1200fps is a relatively mild deer load. It's not a bear load, in any context that doesn't involve a lot of wishful thinking. Magazine capacity cannot make up for a lack of penetration due to a lack of bullet mass.
 
And yet we have countless examples that are verified by actual people using said 200–250 grain projectiles in grizzly bear defense.

As I’ve said, we'll have to agree to disagree on this point. I place a greater emphasis on quick first shots and follow up shots on a charging animal, then you do
 
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But with a marginal cartridge, your likelihood of needing followup hits goes up.
I understand that. I also understand that even without a "marginal" cartridge, shooting in a hurry at a moving target there's still a good chance of needing a followup. Given that a followup is likely in either case, albeit perhaps a little more likely with a "marginal" cartridge, it doesn't make sense to take on too much of a handicap in terms of being able to deliver one--or 5 or 10.
I never understood the logic behind a lesser cartridge for defense than hunting. In the world of dangerous game, it's exactly the opposite. You may take your initial shot with a scoped .375 but when you have to go in after a wounded critter, you pick up the .500 double. If I wouldn't hunt with the cartridge, I sure as hell wouldn't count on it to stop the critter once it's enraged.
I'll explain the difference between the three different scenarios although I suspect the issue is less that you don't understand it and more than you just don't agree with it.

1. In hunting, the goal is a well-aimed shot. The reasonable goal is to put the animal down with that single shot, so followups are less of a critical concern. When hunting dangerous game, there's likely some backup, reducing the necessity of followups even further. That makes it quite different from getting waylaid/attacked by an animal and needing to defend one's self in a hurry.

2. Going after a wounded animal is a third case that is quite different from normal hunting and from a typical animal self-defense case. There's a very high probability of encountering an angry, wounded animal in a relatively short timeframe, so typically you would want to do this with more than one armed and competent persons, and kitting up with a very powerful (and presumably large/heavy) firearm makes perfect sense. You're on alert with the gun in your hands and ready and so is your backup. That makes it quite different from hunting where the goal is a single, well-aimed shot, preferably taken on an animal who is not aware that it is about to be shot. And it makes it quite different from going out on a walk or a hunt with no reasonable expectation of encountering danger but arming one's self against the unlikely event.

3. In the case of self-defense, you are not planning to ambush an animal with a single well-placed shot. In fact, you aren't expecting to encounter an attacking animal at all, you're just planning for that remote possibility. You are engaged in some other activity, the gun you carry isn't the point of the activity, it's there as a contingency so it doesn't make sense for it to dominate your loadout. If you get attacked, you almost certainly won't have a lot of time to prepare, you won't start the encounter with the gun in your hand, you may not have backup, and if you do, they will be taken unawares just like you. And the target won't be unaware, it will be moving on you. So you won't get the well-aimed shot likely in a typical hunting scenario--missing or making a less than ideal shot is likely. And your backup may not be there, or will be unprepared just as you are. That makes followup shots very important--we can see in the various encounters that one shot stops are not likely regardless of what cartridge is used. If the animal is wounded and runs away, you won't be going after it, you will be leaving the area and considering that to be a successful outcome. So you won't need to kit up to go after a wounded animal.
It doesn't mean much if you're using a marginal cartridge, where each bullet is incapable of stopping the threat.
That comment isn't really relevant to this particular discussion. In one incident, documented by game wardens, a 10mm bullet broke a grizzly's femur. Obviously a bullet that has the ability to break the largest bone in a bear's body is capable of killing the bear. So we have indisputable evidence that the bullets under discussion are definitely capable of stopping an attacking bear, even if the caliber isn't what some would consider ideal for the task.
Couple that with the increasingly prevalent idea that all defensive handgun cartridges are the same...
Strawman. No one says they are all the same. There is, on the other hand, a lack of evidence that cartridges in the service pistol performance class, in spite of their differences, exhibit significantly different performance in terms of actually stopping human attackers. The issue is that human attackers are often (perhaps in the majority of cases) stopped psychologically. That is, they realize they have been shot and decide they do not wish to continue attacking. This creates a situation where the actual terminal performance of the cartridge used can end up playing a relatively minor role in the actual process of stopping a human attacker.

I don't believe there is any significant evidence that attacking wild animals can be stopped psychologically since they do not understand the implications of gunshot wounds. Which makes bringing up discussions about real-world effectiveness of cartridge performance on humans largely irrelevant to the topic of stopping large attacking wild animals. And that means in this context it is a red herring. Nice. Two logical fallacies in one sentence. Extra credit for referencing logic in the same paragraph. 😁
...people are choosing lesser equipment because it's easier.
That's certainly part of it. But that's obviously not all of it or this discussion wouldn't be happening. People are clearly concerned that the cartridge have a good chance of being effective for what it's intended. The fact that it's possible to get that in a package that's easier to pack and easier to shoot is certainly something most people are going to consider, but not if it won't do the job. I suspect that another consideration is that it's obviously desirable if someone can use something they already own. So easier, yes, in more ways than one, but not without having been shown to have the capability to do the job by real-world evidence.
 
regardless of one's cognitive dissonance preference, the Buffalo bore YouTube videos are an excellent source of info on this topic. Tim just put out another one on the difference between a hunting rifle and a stopping rifle.

Another example of two capable guns being a good idea when around dangerous game.

murf
 
I'll explain the difference between the three different scenarios although I suspect the issue is less that you don't understand it and more than you just don't agree with it.
I don't understand it because it is illogical. You're going to depend on half a dozen or more hits on a critter that runs at 35mph and kills for a living. A charge is a charge. It is entirely illogical to choose a less effective cartridge on what is presumed to be an enraged critter. There's little time to place a dozen shots. A 220gr 10mm or 255gr .45ACP is a deer load, at best. Absolutely not enough for what may be a 1400lb enraged bear that is solid fur, muscle and bone. It doesn't take a lot to break a bone, even a big one. It does take a lot to break a major bone and continue on to destroy the vitals. Sorry but when 355gr .44's do not exit on a shoulder shot water buffalo, there is absolutely no way in hell I'd count on a 10mm to stop a big bear.

But folks are going to do nothing but try to justify the choices they already made so I'm out.
 
You're going to depend on half a dozen or more hits on a critter that runs at 35mph and kills for a living.
No, I want the possibility of half a dozen or more hits in case I need them. I'm depending on one good hit to stop the encounter, using a caliber that is known to have the capability to do the job, but planning for the possibility that in a dynamic encounter, there may be misses or less than ideal hits--something that is true with any caliber.
...there is absolutely no way in hell I'd count on a 10mm to stop a big bear.
And you have a right to your opinion, but that doesn't change the fact that we know from multiple real-world encounters that it can do the job.
But folks are going to do nothing but try to justify the choices they already made so I'm out.
I don't have any plans to go anywhere there are bears, and I have handguns in both 10mm and .44Mag, so it's not about choices I have made, or even that I have plans to make. It's about logic and real-world evidence.
 
What we "know"? Only according to the kind of vague defensive stories behind the same reasoning that the 9mm is "just as good" as the .45ACP. Ask somebody who actually shoots big critters with handguns, way different answer. What did Sundles say his 1st choice is? A .500 Linebaugh.

If the 10mm is enough for an enraged 1500lb bear, why are we hunting with .44's, .45's .475's and .500's? Why is this same logic not applied to dangerous game in Africa??? Because there's studies that tell you what you want to hear and then there's reality. In the real world, nobody with half a brain goes forth and intentionally shoots a 1500lb animal capable of such violence with only a 10mm. Sorry but this entire line of "logic" is completely disconnected from reality.
 
What we "know"?
Sure. That's not even a matter of opinion. There have been multiple incidents listed on this thread where people have successfully used 10mm to stop grizzly attacks and we even have evidence that it can be done with lighter calibers than 10mm. In fact, the only clear failure I've seen of 10mm on attacking bears (although I'm sure there have been some that I haven't seen) is where the gun wasn't fired.
In the real world, nobody with half a brain goes forth and intentionally shoots a 1500lb animal capable of such violence with only a 10mm.
As you know, this thread isn't about "intentionally" shooting bears. It's about bear self-defense. Just as experts agree that if you're definitely on your way to a gunfight, you should arm yourself with a long arm while acknowledging that in the real world people almost invariably carry handguns for self defense, people agree that if you're on your way to intentionally shoot a bear, you want to use a heavy caliber, but acknowledge that in the real world, that's not what people are going to have on them for bear self-defense.
What did Sundles say his 1st choice is? A .500 Linebaugh.
Sure, and if he makes a good hit with his first shot, that's almost certain to do the trick. But if he misses (perhaps not due to his own lack of skill, but due to the unpredictable motion of the bear), he's going to be hard pressed to get off a second shot before he's getting chewed on. That has to be a consideration for people operating in the real world. People miss--there's just no way around it. Even on stationary targets when they can take their time and using long guns. When shooting at a moving target with a handgun under just about the highest stress imaginable, misses are inevitable. A plan for survival that doesn't include a practical way to deal with a miss isn't realistic.
 
It is intentional. You are intentionally going to bear country with a 10mm for defensive use. That is intentional.

Dilettantes can fire a Freedom Arms .454 fast enough to empty it in 3secs. The rapidity of fire is a false narrative and you're only going to have time for so many shots. Obviously repeated by people who don't practice with big bores. This reinforces my basic premise that people choose what's easy.

Go forth and shoot something 1000-1500lbs with a 10mm and report back on how good an idea it was.






This being a 45acp+p versus 10mm thread, I thought that I would go to the data! They both work for bear defense. 👍
Oh yes, the "data". Of the 10mm examples:

#1 Was a gut shot where the bear ran off and died later.

#2 Bear was also shot with a .340Weatherby.

#3 Emptied his pistol and the bear was never found.

#4 The bear was on top of him.

#5 Black bear that still mauled him, also had to clear a malfunction.

#6 CNS hit, probably the only true charge stop in the list.

#7 Two shooters, 31rds, yeah no.


Only three of the .45 examples were brown bears:

#1 Gun was emptied, both guys ran up a tree and the bear was found the next day.

#2 Bear charged three different times and was shot 9 times.

#3 Zero details.


As I've said multiple times in multiple threads in multiple contexts, you can't rely on a study to do your thinking for you. If "bear shot with 10mm, shooter lived" is enough for you, it ain't enough to convince me. I want details, all of them. I dig bullets out of gut piles. I want to hear the results from somebody who dug the bullets out of the gut piles. None of the above impresses me in the least, except the shooting of the guy in 10mm #6.
 
It is intentional.
I'm going to be out of the house today with my carry gun, so I'm going to intentionally shoot someone today with my carry gun, by your "logic". Actually, my goal is to never shoot anyone with it, so if by "intentionally shooting something", you mean "intending never to shoot something" then I guess you're right. 😁
The rapidity of fire is a false narrative and you're only going to have time for so many shots.
You are 100% right that you'll only have time for so many shots, and the more the recoil/muzzle rise, the fewer the shots you'll have time for and the poorer the quality of the followups. This is why all the practical pistol competitions regulate scoring by power factor--a scaled version of momentum which relates directly to recoil. People shoot faster and better with calibers that don't recoil as much--there's really no room for debate on that. Given that fact, and the reality that defenders are going to miss and make less than perfect shots with a handgun when under high stress and shooting at a moving target, it doesn't make sense to unduly limit the number of shots that can be taken and the quality of those shots by going too high with recoil. The sweet spot is cartridges that are demonstrably capable of ending the threat but that don't incur too much of a recoil penalty.
If "bear shot with 10mm, shooter lived" is enough for you...
Well, yeah, by definition, "...shooter lived..." is successful self-defense. More details is always good, but the bottom line is that we can see it has worked, and we can see by the penetration figures that it is capable of working.
Go forth and shoot something 1000-1500lbs with a 10mm and report back on how good an idea it was.
I think that most people who are forced to use a handgun to defend themselves against a bear wouldn't do it again if they had the choice. In fact, I think that most people who haven't would rather that it stayed that way. That aside, we can see from the real world that 10mm and .45ACP work for bear self-defense.

#1 Bear attacked, was shot, ran away, defender survived. Successful self-defense.

#2 This was a successful self-defense, but it probably doesn't make sense to credit the pistol shots due to the rifle shot involved.

#3 Bear attacked, was shot, ran away, defender survived. Successful self-defense.

#4 Bear attacked, was shot, defender survived. Successful self-defense.

#5 Bear attacked, was shot defender survived. Successful self-defense.

#6 Bear attacked, was shot, defender survived. Successful self-defense.

#7 Not a great story, but the defender(s) did survive so that's still a success.

.45 Examples:

#1 Bear attacked, was shot, defender(s) survived. Successful self-defense.

#2 Bear attacked, was shot, defender survived. Successful self-defense.

#3 Bear attacked, defender survived. Successful self-defense.

And as you know, there have been incidents where even lighter calibers have been used successfully to stop grizzly attacks.

By any reasonable evaluation criteria, when the defender survives, that's successful self-defense. That's the standard we use for self-defense against human attacks. If the defender survives, we claim it's a success, even if we don't get all the details and even when the scenario doesn't play out like a movie script. Why should there be a different set of criteria for success when the attacker is a bear? Does it make sense to make up a different criteria for judging successful self-defense for bear attacks? I mean, I can understand how damaging it is to your position and why it would make sense for you to try to redefine terms to support your argument, but your dedication to your stance on the topic doesn't change reality.

Imagine if we looked at a human self-defense story where the defender survived and the attack was stopped and claimed that it was a failure because the attacker was shot too much, or because the attacker ran away instead of dropping on the spot, or because the attacker didn't immediately cease the attack, or because the attacker was gut shot and only died later, or because the defender emptied his pistol and the attacker was never found. Clearly that would make no sense at all, just as it makes no sense at all here.
 
Count me as one who would like to see a SA Freedom Arms 454 Casull loaded with Outdoorsman load clearing 5 shots in under 3 seconds from a holster. I'm intrigued.

What length barrel 6", 7.5" or 10"? And to be fair to the subject at hand this has to be holstered. If one can draw, present, and shoot (edit: on target) under single action with an outdoorsman load of 454 Casull 5 shots in under 3 seconds, then yes that is the correct firearm for them to carry. They also will find themselves within <1% of outdoorsman shooters, so relevance to general population of outdoor recreating persons is very limited.
 
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If one can draw, present, and shoot under single action with an outdoorsman load of 454 Casull 5 shots in under 3 seconds, then yes that is the correct firearm for them to carry.
I agree, but with one modification.

If one can draw, present, and shoot under single action with an outdoorsman load of 454 Casull 5 shots in under 3 seconds <<and actually make hits>>, then yes that is the correct firearm for them to carry.
 
Go forth and shoot something 1000-1500lbs with a 10mm and report back on how good an idea it was.

Someone should go and interview all the 10mm/45ACP outdoorsman who defended themselves against grizzlies what they carry today.

I'll bet you most of them haven't changed their outdoors carry firearm out of fear of it being inadequate.
 
It is intentional. You are intentionally going to bear country with a 10mm for defensive use. That is intentional.

While hiking in bear country, I carry a firearm that has successfully been used against the threats I may encounter.

Since we always seem to fall into the brown bear discussion as the only threat?
Well 2 legged critters in the wilderness are a threat also and unlike brown bear they travel in packs. So you meet up with 3 crackheads in the wilds of Montana do you want a 5 -6 shot 454 or a 10mm? It is your choice.
I mentioned earlier that I bought a S&W 69 for a Western carry gun. Shoots great! It's accurate! And slow for me to get back on target. At 60 years old with osteoarthritis in my hands It is easier to shoot a 10mm, 45acp +p, or/and 357mag quickly.

I have had the good fortune of traveling to Yellowstone NP 3 times. The first time without a carry gun (no permit at the time). The next 2 trips with my Taurus 415 41mag. The 41mag is a lot easier to get back on target than the 44mag or a 454. It shoots good and light to carry (we haven't discussed concealment or weight). While in Yellowstone the first 2 trips I saw Grizzly bears, the 3rd trip a really large cinnamon color black bear. I also saw more black bears, wolves, coyotes, moose, sheep, elk, bison, pronghorn, deer, snakes, and other little critters. The most dangerous one? The biggest threat? Tourists!!!
One thing that I do is get out of the car and off the boardwalk and go hiking.
Next western trip I will carry my Glock 29 or XDM compact for hiking. They are easy to conceal and carry like a G19.

My whitetail hunting handgun for 2025 will be a 7.5" SRH 44mag. It's topped with a Burris 2x scope. I would have went with a red dot but after destroying 2 red dots on 44mags I opted for the Burris.

It's about choice.
In defending myself I want to stop the threat/attack. In hunting I want to make a humane one shot kill.
 
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