Stopping Power of .45 Compared to 9mm

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That would probably explain why shooting at iron plates at 25 yds. with a 9mm is not very impressive.
I don't think so. The figures you mention are energy (1/2 m*v^2). The 115 9mm's half the weight of the .45, and only 200-400 FPS faster (some have equal energy ratings to .45 ACP).
Momentum does a lot of the moving of steel plates, I'd expect (as I recall my Physics classes - given two forces meeting and not shattering/breaking, the energy change is momentum only) - and that's M*V. 230*850 is a lot bigger than 115*1200. The 115 grainer would have to travel at a blistering 1700 FPS to match that .45's momentum, so it's not likely to ever come close to being as impressive as the .45 for that test.
 
As has been said, the key factors IMVHO are placement and penetration. Of course, the attitude/psycology of the bullet's recipient play a huge roll too. The "Three Ps" perhaps ? buzz_knox summed it up pretty well actually.

Yup...the 3 P's...I like that...and it does say it all! Even if you do get the placement and penetration...you better be ready to keep pulling the trigger (and pray while you do it) if you really expect to stop a determined attacker with a paltry side arm. Anything smaller than a 30.06 against a human being is getting dicey in my book.
 
I still love this one posted by rantingredneck
I've got the solution to that one too.

Anyone who thinks 8 .45ACP's isn't enough for me to hit them with line up on the right.

Anyone who thinks 1 9mm round COM won't hurt line up on the left.

Testing begins in 5 minutes.
 
The number of agencies is pretty meaningless,...
I have to disagree.
I've never talked to any cop who was content with the 9mm in a full-sized service pistol.
And I disagree with the notion that agencies are not concerned with the effectiveness of their handguns.
The fact that a few agencies still cling to the 9mm does not change things....the writing is on the wall, the 9mm is on it's way out as a police caliber.
And hopefully as a military caliber as well.

The 9mm has it's place....especially in small subcompact pocket-pistols. But not as a full-sized service pistol.
 
Texagun,

I wouldn't consider a 115 gr bullet in 9mm for self-defense. The 149 gr has much better ballistics with regards to penetration. In fact, it is on par with (meaning sometimes exceeds and sometimes is exceeded by) the .45 230 gr as far as penetration is concerned. Where it doesn't perform as well is the expanded diameter.
 
A picture is worth a 1000 words..

...

+1

And I have to agree with Texagun.. gun.gif


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This is a 45 beating an old dead 9mm horse.. lol

beatdeadhorse.gif

And in a world of life and death, where only an 1/8" - 1/4" can mean success or not with the exact, slightly off-target, hit by both measured JHP bullet spreads..

45GoldDotvs9mmGoldDotjpg.gif

OR thru a puppet show.. lol

45 vs 9mm


16884happythanksgivingaqt9.jpg
 
At 50 or 100 yards the 45 ACP has really more power. I shooted some heavy metal target with the 45 and the 9, the 9mm hasn't enough power to put them down...
 
Here are my thoughts. I own an HK Mark 23 which is probably one of the best 45 handguns ever designed. Its also supposed to be one with the softest recoil. I was shooting it last weekend after my Sig 226 9mm and the comparisons are night and day.

The Mark 23 holds 12+1 and Sig is 16+1. I had six 8" steel plates at 15yards and was trying to hit and knock them down as fast as possible. Needless to say that it was significantly more difficult to control the Mark 23 than the 9mm of course. For me to knock all six plates in a row without using more than six shots it took me 50% more time on the stopwatch than the 9mm.

I would imagine a lighter .45 with full defensive rounds would be even worse. Needless to say, i think i would choose 17rnds of Federal HST 124 or 147grain over 13rnds of .45 just because of the follow up speed. Just my 2 cents.
 
There is no meaningful number to compare the two. Its like asking for a chart of unicorn magic levels.

Is it reasonable to trust a 9mm hollow point to your families safety?
Yes. As with any caliber though the burden will be on you to place the shots properly. I always recommend people read this http://www.firearmstactical.com/hwfe.htm as well.

I've never talked to any cop who was content with the 9mm in a full-sized service pistol.
Talk to more cops.

The fact that a few agencies still cling to the 9mm does not change things....the writing is on the wall, the 9mm is on it's way out as a police caliber.
Last I looked the 5 largest police departments in the US issued 9mm weapons and accounted for 10% of all police in the US. I'm not sure that indicates its on the way out.

Lonestar49, why would we compare unexpanded jhp sizes? Shouldn't we look at expanded rounds which will be very similar in size and penetration depth? If a picture is worth a million words though and we want to look at unexpanded rounds I guess we can.
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Not even close....the .45 is the clear winner in effectiveness.

Based on...?
WWII, the Korean War, the Vietnam War, and police shootings throughout the USA....
It's no big secret that the 9mm is not as effective as the .45ACP for quickly stopping a determined aggressor.

It's not that the 9mm sucks; it's just that the .45 is better.
 
WWII, the Korean War, the Vietnam War
Please provide us with the comparative statistics form these wars regarding the relative one-shot-stop capabilities of the calibers in question.

, and police shootings throughout the USA....
It's no big secret that the 9mm is not as effective as the .45ACP for quickly stopping a determined aggressor.
Actually, all of the studies with which I'm familiar, using modern loads, indicate very little difference between the two. Do you have anything to offer other than "everybody knows"?

It's not that the 9mm sucks; it's just that the .45 is better.
You might want to consider getting yourself a calendar from this millenium. Modern 9mm loads have dramatically changed the equation.
 
Please provide us with the comparative statistics form these wars regarding the relative one-shot-stop capabilities of the calibers in question.
Who said anything about one-shot-stops?
One-shot-stops are practically mythical in my opinion.

Actually, all of the studies with which I'm familiar, using modern loads, indicate very little difference between the two.
Perhaps you should talk to more cops and veterans.

Do you have anything to offer other than "everybody knows"?
Do you have anything to offer other than just trying to argue with anyone who disagrees with you?

You might want to consider getting yourself a calendar from this millenium. Modern 9mm loads have dramatically changed the equation.
Not really.
It might come as a shock to you, but the old .45ACP has not remained static all these years.
Just as advancements have been made to the 9mm, so too have advancements been made to the .45ACP.
Not to mention the .40S&W, which has also pushed the 9mm aside.
If you're real careful in your ammo selection, the 9mm can come close to the effectiveness of the .45, but it's very difficult considering the size and weight limitations of the 9mm.
 
Considering how many times cops arrest people because they don't know the correct law or otherwise violate people's rights and get their findings tossed out of court, they would therefore be the absolute LAST people I would trust for any ballistic information or opinions, especially considering most cops I DO know are not gun nuts.
 
I don't even know why I respond to the C-WARS

Quote: Lonestar49, why would we compare unexpanded jhp sizes? Shouldn't we look at expanded rounds which will be very similar in size and penetration depth? If a picture is worth a million words though and we want to look at unexpanded rounds I guess we can.
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As I said, and both unexpanded bullet a/o color pic's clearly show, a min 1/8" difference (to start) along with what I have seen of LEO's that "can use" and prefer the 45 caliber over 9mm, bar none. As, IF I had to stand behind a corner, wall, or car door, and have someone firing at me, I'd hope they were firing 9mm JHP than "any" 45 caliber JHP, both, as far as penetration values, and from "the best", meaning, those SWAT officers that have shown me both calibers, and their real spreads that actually hit human flesh, not jello, and heard their repeated reports of how the 45 has what they deem, man-stopping-punch, vs any 9mm they have seen in "the field"..

But, please, don't take my word or pics (in humor) above, as the Holy Grail of Bullets and calibers, but "I do" take their, "in the field" actual results, word, of the better caliber.

And as I said, and it shows in your pic and my above copied pic from Texagun, that a min of 1/8", just to start, bigger in size can, and does, in many real cases of flesh hits, where a 45 JHP will expand a full 1/4" more than any 9mm and that little extra spread can, and does, make a big difference when one is min 1/8" off a perfect shot at an organ, or main arrty, etc.

But, I shoot and carry 9mm's as well when the condition calls for it over a 45 cal gun of mine and I trust either caliber with the right shot placement, will do the job. But real flesh hits by those that, are paid, train, full-time, are Expert Marksman and to carry out such deeds, when it comes to actual use, call for 45cal over 40cal, or 9mm, along with most, use 1911's..

Old school, old wars, old guns, still work best for those that are the best and I respect those that I know, personally, and value their expertise on this matter.. But I'll just laugh with you, not at you, at this repeated thread of what is better and leave it to all those that have the answers.. ~ 242.gif ~


And lean heavily in favor of an extra 1/8" to start with any 45 along with it's ability to penetrate, thru "weight and inertia" more wood, more wall, more car doors, etc., and when it hits flesh it packs more punch, and spread, than any 9mm.


Here's a spread, you can measure the difference.. Using the right gray edge of the box, all bullets being centered, as you see them, which caliber do you see hitting the edge first with all bullets moved equally, and using the first to strike, the edge, letting the edge be a main arrty, major organ, main/major nerve?

And which are still "just missing"..? One, far more than the other, that will hit first, by just 1/8"-1/4" which could be the, and mean a, big difference.


Handgun_expanded_JHP.gif



Ls
 
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I'd still prefer a hi cap 9mm over a 1911, typically more accurate in combat configuration plus more capacity.

Trivia, didn't the .38 Super get born because of the 45ACPs lack of power in certain situations?
 
easyg - I've never talked to anyone from Tibet, but there's a whole nation of them out there, and there's American Tibetans.

Just because you've never talked to a cop who liked a 9mm full-sized service pistol just means you haven't talked to enough cops.
 
Who said anything about one-shot-stops?
One-shot-stops are practically mythical in my opinion.
OK. Then provide the statistics requested according to whatever standard of "stopping power" you think is meaningful.

Perhaps you should talk to more cops and veterans.
Why? The vast majority of cops have never shot anyone. What do you think makes them experts on the subject? The majority of veterans have never shot anyone with a handgun either.

Do you have anything to offer other than just trying to argue with anyone who disagrees with you?
I challenged an assertion you made. If you don't have enough confidence in your assertions to support them then don't make them.

Not really.
It might come as a shock to you, but the old .45ACP has not remained static all these years.
Just as advancements have been made to the 9mm, so too have advancements been made to the .45ACP.
Yes, but the incremental improvements to the latter two have not been as significant as the improvements made to 9mm loads.

Not to mention the .40S&W, which has also pushed the 9mm aside.
Hardly. The 9mm is still FAR more prevalent around the world than either .45ACP or .40S&W.
 
Not even close....the .45 is the clear winner in effectiveness.
There's a very good reason that the vast majority of police agencies have abandoned the 9mm in favor of the .45ACP, .45GAP, and .40S&W....the 9mm is just not as reliably effective against human targets.

Now that is a pretty silly statement, considering that some of the largest police departments in the USA use the 9mm, and the FBI just adopted a Winchester 147 gr. bonded bullet as duty ammo for agents who choose 9mm. :rolleyes:

In fact, the 9mm has more rounds that have passed the FBI's standardized tests than any other semi-auto handgun caliber.

The 9mm is also used by some of the most elite military forces on the planet such as the various US special forces units, British SAS, German GSG-9 and Israeli special forces.

In fact, the 9mm is THE caliber of choice around the world and has even been adopted for police and military use by some formerly Communist countries. I'd say that around the world, the 9mm has dropped more criminals and terrorists than all the rest of the semi-auto service calibers combined.

There is no magic bullet and no magic caliber. All the common service calibers (9mm, .357 Sig, .40 S&W, 10mm, .45 ACP) MAY do the job providing effective shot placement and proper bullet selection.

The psychological make up of the target at the time of the shooting is far more important than the caliber you carry. The person who is drugged or is determined to kill you will not care what caliber you are shooting him with. He will simply keep coming, and you should train with this in mind.

With whatever caliber you choose, only a solid hit to the CNS will reliably stop the aggressor. Other than that, the only other way to stop the attack is to disrupt the vital organs, or cause as much bleeding as possible, although this may take some time to be effective.

Never stop shooting until the threat is eliminated, regardless of what you carry. All of these calibers can work, and all of them can fail. You should expect them to fail. As far as terminal effects are concerned, there is very little difference between them all. Leave the caliber wars to the mall ninjas.
 
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well, to put it in perspective. I'd say if you got a Glock get the 9mm at least it has less of a chance of blowing up than a 45...

Now for everything else 45 is just fine with me. I like a little punch in my gun. And its all about the mass. The mass of the 45 in normal bullet ranges is substantially more.

There is nothing wrong with the 9mm, or for that matter the 380. I just like a little more meat on the bones, K, thx!
 
There is no magic bullet and no magic caliber. All the common service calibers (9mm, .357 Sig, .40 S&W, 10mm, .45 ACP) MAY do the job providing effective shot placement and proper bullet selection.

The psychological make up of the target at the time of the shooting is far more important than the caliber you carry. The person who is drugged or is determined to kill you will not care what caliber you are shooting him with. He will simply keep coming, and you should train with this in mind.

With whatever caliber you choose, only a solid hit to the CNS will reliably stop the aggressor. Other than that, the only other way to stop the attack is to disrupt the vital organs, or cause as much bleeding as possible, although this may take some time to be effective.

Well put. And as Dr. Fackler points out, the components of the CNS that will reliably cause a cessation of hostilities are very small and difficult to hit under stress (the upper end of the spinal column and the brain itself). Most of us would agree with his theory that a larger diameter bullet has a very slight chance of impacting a critical structure that a slightly smaller bullet would not (ie, the approx .096" difference between 9mm and 45 ACP), but we are talking a very small difference in size. And if the total difference between the two rounds is only .096" (diameter) approximately, really only about half that distance (a bit less than .05" - the radius) comes into play in a near miss situation.

So if one can shoot 9mm and 45 ACP equally well and: 1. Can afford 45 ACP's higher cost or 2. reloads ... 45 makes sense. But a person who can shoot 2" groups at 7 yds with a 9mm vs 4" groups with a 45 is probably better served by the 9.

I saw a guy at a range once who had rented a Glock 17 (9 mm) and a 23 (40 S&W) to base a purchase decision on. I'll be the first to admit that I am no expert shot, but this guy needed to spend some quality time with an instructor and a 22 :eek: . Anyways, I have difficulty recalling the exact groups he shot and at what distance, but it went roughly like this (assume 7 yds to target):

9 mm: 8" groups
40: 12" groups

Which did he go with? Why, the 40 of course. Everyone knows that if you shoot a BG between the eyes with a 9mm you will only make him cranky. But a 40 (like a 45) in the thumb will rip is arm off and throw him clear across the room - his arm landing somewhere in the next county :scrutiny: :p.

I personally like both 9mm and 45. Right now my only semiauto caliber is 45, but I wouldn't feel any less well armed with a 9mm. That said, my personal favorite handgun cartridge is 38 Special, because that is what I usually shoot best. Light recoil (quick, accurate follow up shots) + sufficient penetration = the best choice for me.
 
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