What caliber kills the most people?

Asked by: Ms. Shana Kozey  |  Last update: April 13, 2026
Score: 4.5/5 (39 votes)

While 9mm is the most common caliber used in shootings (both fatal and non-fatal) in the U.S. due to its prevalence in handguns, studies show larger calibers (like .40 S&W, .45 ACP) are more lethal per shot, increasing the likelihood of death, while smaller calibers like the .22 are often used in mass killings and are very common in overall homicides/suicides, often because they are widely available and used in domestic incidents.

What's more lethal, 9mm or 45?

The 9mm is typically considered less powerful than the . 45 ACP, but it is also lighter and easier to control when shooting rapidly. Its smaller size makes it a good choice for concealed carry pistols, as well as subcompact handguns.

Why do Mexicans like .38 super?

Apart from its popularity in shooting sports, the . 38 Super +P is one of the most popular pistol cartridges in Latin America due to local restrictions on civilian ownership of firearms chambered for military cartridges, such as 9mm Parabellum and . 45 ACP.

What hits harder, 357 or 45?

357 Mag. usually produces more energy and offers a better trajectory. These 125-grain pills from Sig Sauer, for example, produce 583 foot-pounds (ft. -lbs.)

Is 308 more lethal than 556?

Both cartridges are combat-proven and lethal within self-defense ranges. The only caveat is that the 308 will be more prone to over-penetration in a home defense situation, which is why I have to give a slight edge to 5.56.

Guns That Killed Historical Figures

43 related questions found

Will a 308 stop a grizzly bear?

308 would be a great choice if you don't plan to shoot too far. I've killed many bears in Idaho with many different calibers from 243 to 7mag. I believe that you should shoot whatever you're comfortable shooting.

Is 223 or 308 more powerful?

Power: 223 VS 308

The . 308 Win is more powerful than the 223 Rem. The 150gr . 308 Win bullet has a velocity of 2,820 and energy of 2,648 Ft Lbs at the muzzle.

Will a 357 mag stop a grizzly bear?

A . 357 probably won't reliably stop a grizzly, but neither will any other pistol round. It's a good all around round for open carry in the wilderness that packs a lot of power, but is still manageable.

Is 44 mag or 357 stronger?

The 44 Magnum ammo often has higher muzzle velocity, more propellant, and a heavier bullet than 357 Mag. These factors grant the 44 Mag significantly stronger recoil, even though revolvers chambered for it are typically heavier. The 44 Mag generates roughly 18.5 foot-pounds (ft-lbs) of recoil.

What is the greatest pistol of all time?

There's no single "best" pistol, as it depends on the criteria (accuracy, reliability, history, use), but top contenders often cited include the Colt 1911 (iconic, influential), SIG Sauer P226 (legendary reliability for SEALs), Glock 19 (revolutionary polymer, ubiquitous), and the ultra-precise SIG P210 (match-grade accuracy), with modern options like the Walther PDP and Staccato series praised for performance.
 

Why do 1911s jam so much?

1911s are known to jam due to their tight tolerances and reliance on proper grip, but common causes include bad magazines, weak springs, dirty components (extractor/feed ramp), incorrect lubrication, and "limp wristing," where the shooter's grip isn't firm enough to absorb recoil, leading to short-stroking. Addressing these issues with quality mags, thorough cleaning (especially the extractor), proper oiling, and a firm grip can significantly improve reliability.
 

What pistol do Navy SEALs carry in 2025?

While the SIG Sauer P226 MK25 (a specific, corrosion-resistant 9mm model) has long been the iconic standard, Navy SEALs increasingly use other reliable options like the Glock 19 for its superior performance in saltwater environments, with personal preference and mission needs influencing choice, though no single official handgun defines 2025 operations as they use a variety of reliable sidearms.
 

Do cops carry 9mm or 45?

Today, most law enforcement officers carry full-size or compact semi-automatic pistols chambered in 9mm. Leading models include the Glock 17, Glock 19, Sig Sauer P320, and Smith & Wesson M&P series—selected for their reliability, capacity, and compatibility with duty lights and optics.

Is 5.56 or 9mm more lethal?

If you are looking for home defense, the 9mm might be a better ticket. It is not as powerful as the 5.56 options, but the shorter 9mm is easier to maneuver inside a home. If you are looking for a shooting option that is long-distance with more accuracy, then the 5.56 guns are probably a good bet.

What does ACP mean in ammo?

Anyone interested in firearms and ammunition, especially pistols, will inevitably come across the acronym ACP ammo. This abbreviation stands for “Automatic Colt Pistol,” and designates cartridges used in a specific, and rather historic, type of firearm.

Is AK-47 more powerful than AR-15?

Neither the AK-47 nor the AR-15 is definitively "more powerful," as they excel in different areas: the AK-47 (7.62x39mm) hits harder at closer ranges with a larger bullet but is less accurate, while the AR-15 (5.56x45mm) offers greater accuracy, range, and modularity due to its lighter design and faster, smaller round. The AK's raw stopping power is higher at short distances, but the AR's velocity and precision make it better for longer engagements, making the choice dependent on intended use.
 

What is the easiest rifle to handle?

The Best Rifle for Beginners: The Contenders

  1. Remington 700. Ah, the classic Remington 700. ...
  2. Ruger 10/22. Another timeless classic since 1964, and with good reason. ...
  3. Savage AXIS. Savage has a reputation for making guns that shoot well. ...
  4. Aero Precision AC-15. ...
  5. Ruger AR-556. ...
  6. Century Arms C39v2. ...
  7. Tikka T3X Lite. ...
  8. Aero Precision M5E1.

Is a 5.7 more powerful than a 9mm?

Neither 5.7mm nor 9mm is universally "better"; they excel in different areas, with 5.7x28mm offering flatter trajectory, less recoil, higher capacity, and armor penetration, making it great for rapid follow-up shots and specific defense roles, while 9mm provides greater stopping power, wider wound channels, and is more affordable and common, making it a proven, budget-friendly choice for general self-defense. The best choice depends on the user's priority: armor piercing/capacity (5.7mm) or cost/stopping power (9mm). 

What do Alaskans use for bear defense?

Alaskans primarily use bear spray (capsicum extract) for close encounters, as it's effective and portable, but also rely on firearms like shotguns with slugs or powerful rifles (.300 Mag, .45/70) and heavy handguns (.44 Mag, 10mm) for more serious defense, alongside noise makers, always prioritizing common-sense prevention like making noise and avoiding surprises.
 

Is a 10mm more powerful than a 357 Magnum?

The .357 Magnum is generally more powerful in terms of raw muzzle energy, especially with heavier bullets, often exceeding hot 10mm loads, but the 10mm Auto offers similar power with faster follow-up shots in semi-automatic pistols, making it a strong contender for defense against large predators like bears. The winner depends on the specific loads and intended use: .357 Mag for maximum power from revolvers, 10mm for high capacity and semi-auto versatility. 

Can 357 penetrate body armor?

Yes, a .357 Magnum can penetrate lower-level body armor (like Level II), but it can be stopped by higher-level vests, especially those with hard plates (Level III or IV), though it still causes significant blunt force trauma; protection depends heavily on the armor's NIJ rating, type (soft vs. hard plates), and ammunition used. Level II armor is rated to stop .357 Mag, but it might exceed limits, while Level IIIA stops most handguns and .44 Mag, requiring plates for higher threats.
 

What caliber is a 223 equal to?

The .223 Remington is equivalent to 5.56x45mm NATO in bullet diameter, but the 5.56 NATO is loaded to higher pressures and has slightly different chamber/throat dimensions, making .223 safe in a 5.56 rifle, but 5.56 potentially dangerous in a .223 rifle. Think of them as very close cousins: .223 is the civilian, lower-pressure version, while 5.56 is the military, higher-performance version, but they share the same bullet size.
 

Why do snipers prefer 308?

308 rifles? Several reasons, mostly related to its maturity as a cartridge. It has sufficient ballistic power to be effective to the distances most snipers will be able to make consistent hits on a man-sized target, about 800m, without unpleasant recoil.

Why do special forces use 300 blackout?

Special forces use the .300 Blackout (300 BLK) for its exceptional versatility, particularly its ability to switch between quiet, subsonic rounds for stealth and powerful supersonic rounds for range, all from the same AR-15 platform by changing magazines, making it ideal for compact, suppressed weapons that offer submachine gun quietness with rifle power and penetration, outperforming 5.56mm in short barrels for specialized missions like close-quarters combat or eliminating sentries silently.