Fact Check: Are Full Metal Jacket (FMJ) bullets effective for self-defense?

Fact Check: Are Full Metal Jacket (FMJ) bullets effective for self-defense?

Published May 2, 2025
VERDICT
Mostly False

# Are Full Metal Jacket (FMJ) Bullets Effective for Self-Defense? ## Introduction The claim under examination is whether Full Metal Jacket (FMJ) bull...

Are Full Metal Jacket (FMJ) Bullets Effective for Self-Defense?

Introduction

The claim under examination is whether Full Metal Jacket (FMJ) bullets are effective for self-defense purposes. This topic has garnered attention due to the ongoing debate among firearm enthusiasts, self-defense advocates, and law enforcement professionals regarding the suitability of FMJ ammunition compared to other types, such as hollow points.

What We Know

  1. Definition and Characteristics of FMJ: FMJ bullets are designed with a soft lead core encased in a harder metal shell, typically copper. This design allows for deeper penetration but does not expand upon impact, which is a critical factor in self-defense scenarios where stopping power is essential 10.

  2. Effectiveness for Self-Defense:

    • Some sources argue that FMJ ammunition can be effective for self-defense due to its reliability and deep penetration capabilities 35. However, they also note that it generally lacks the stopping power associated with expanding ammunition like hollow points 4.
    • Other sources strongly advise against using FMJ for self-defense, citing concerns about over-penetration, which can pose risks to bystanders 28.
  3. Cost Considerations: FMJ ammunition is often less expensive than hollow point ammunition, making it a more accessible option for practice and training 46. However, the trade-off in effectiveness for self-defense scenarios is a significant point of contention.

  4. Legal and Ethical Considerations: The use of FMJ for self-defense may have legal implications, as some jurisdictions have specific regulations regarding ammunition types used in self-defense situations. Ethical considerations also arise, particularly in hunting contexts, where FMJ is deemed less humane compared to expanding ammunition 3.

Analysis

The effectiveness of FMJ bullets for self-defense is a nuanced issue with varying opinions among experts and enthusiasts.

  • Supporting Evidence:

    • TheGunZone states that FMJ can be used effectively in self-defense situations, particularly when considering factors like bullet placement and penetration 5. This perspective is echoed by True Shot Ammo, which acknowledges the reliability of FMJ but emphasizes the debate surrounding its use 7.
    • Wikipedia provides an overview of stopping power, which is a critical factor in self-defense discussions, though it does not specifically endorse FMJ 1.
  • Contradicting Evidence:

    • The article from Swift Silent Deadly explicitly advises against using FMJ for self-defense, highlighting the risks associated with over-penetration and the lack of expansion upon impact 8. This viewpoint is supported by The Concealed Carry Guy, which suggests that alternatives like hollow points are superior for self-defense due to their design that mitigates risks to bystanders 2.
    • Pro Armory also discusses the limitations of FMJ in self-defense scenarios, reinforcing the argument for using expanding ammunition 9.
  • Source Reliability:

    • Sources like Wikipedia provide a broad overview but may lack the specificity and expert insight found in specialized articles. TheGunZone and True Shot Ammo present more focused discussions, though they may have inherent biases based on their affiliations with the firearms industry. Swift Silent Deadly and The Concealed Carry Guy appear to take a more cautionary stance, which may reflect a bias towards safety and responsible gun ownership.
  • Methodological Concerns: Many articles do not provide empirical data or studies to support their claims about the effectiveness of FMJ versus other ammunition types. This lack of rigorous evidence makes it challenging to assess the validity of the claims comprehensively.

Conclusion

Verdict: Mostly False

The claim that FMJ bullets are effective for self-defense is deemed "Mostly False" due to the conflicting evidence surrounding their effectiveness. While some sources suggest that FMJ can be used in self-defense scenarios, they often acknowledge significant limitations, particularly regarding stopping power and the risks of over-penetration. The predominant expert consensus leans towards the view that FMJ ammunition is not the ideal choice for self-defense, especially when compared to expanding ammunition like hollow points, which are designed to minimize risks to bystanders and maximize stopping power.

It is important to note that the available evidence is not exhaustive, and many claims lack empirical support, making it difficult to draw definitive conclusions. Readers are encouraged to critically evaluate the information presented and consider the nuances of the debate surrounding FMJ ammunition in self-defense contexts.

Sources

  1. Stopping power - Wikipedia. Link
  2. Is FMJ Ammo Good For Self Defense? - The Concealed Carry Guy. Link
  3. Can I use full metal jacket for self defense? - TheGunZone. Link
  4. Can you use FMJ for self-defense? | [April Updated] - TheGunZone. Link
  5. Is 9mm FMJ OK for self-defense? | [April Updated] - TheGunZone. Link
  6. Should You Ever Carry FMJ for Self-Defense? - True Shot Ammo. Link
  7. Should You Ever Carry FMJ for Self-Defense? | True Shot Ammo. Link
  8. Don't Use FMJ Ammo for Self-Defense. Link
  9. Hollow Point vs. Full Metal Jacket Ammo: Best for Home Defense? - Pro Armory. Link
  10. FMJ vs. Hollow Points: Which Is Best for Self-Defense? - OpticsPlanet. Link

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Think of it like your phone freezing: all the apps are still there, but none of them open when you tap. Research calls this autistic burnout when it happens in a longer, chronic cycle—linked to masking (Hull et al., 2017; Raymaker et al., 2020). Masking is the art of “performing normal” so well that non-autistic people think you’re fine. The issue is that it eats through your energy reserves like a car idling in traffic with the A/C on full blast (Mantzalas et al., 2022). Eventually, one hard conversation can tip you from functional to frozen. And here’s where couples therapy meets neuroscience: physiological flooding—the body’s fight/flight/freeze switch—is a known relationship killer (Malik et al., 2019; Gottman Institute, 2024). In other words, for some autistic partners, flooding may tend to show up sooner, last longer, and is more likely to pull the plug on speech entirely. The Danger Loop in Marriage Autistic partner goes non-verbal — brain says “nope.” Non-autistic partner reads it as avoidance — brain says “attack.” Pressure increases — “Just say something.” Shutdown deepens — and now you’ve both lost. Do that a few hundred times and you’ll start conflating a physiological response into a moral failing. That’s the real marriage-killer. The Protocol: Three Phases, Zero Guesswork This is where we get practical. You can’t “love away” a temporary shutdown, but you can stop it from turning into World War III. Before: Build the Net Name the state. Agree on a phrase or signal ( I call this a couple code)—such as “words offline,” “shutdown,” a hand over the heart. The point is to make the invisible visible. The Shutdown Card. A literal card that says: I can’t speak right now. Please lower lights, reduce sound, give me X minutes. I promise I will circle back. The Pause Rule. Require a minimum of 20 minutes before resuming any tough talk. Autistic partner may need 90+. Agree ahead of time. Downgrade Kit. the usual gear; earplugs, soft light, weighted blanket, fidget, a quiet room. You know, human decency in object form. Reduce Daily Load. Avoid heavy talks right after work or big social events. Chronic overload makes a nervous shutdown more probable. During: Do Less, Better Autistic Partner: Give the signal. Exit stimulation. Switch channels if possible (text, notes app, yes/no cards). Send a short pre-written message: “Safe, can’t talk, back at 8:15.” Non-Autistic Partner: Acknowledge once—“Got it, I’m with you.” Hold the pause boundary. Lower stimuli. Go regulate your own nervous system—walk, journal, pet the dog. Don’t rehearse comebacks. Both: Avoid sarcasm, interrogation, ultimatums. Nothing lengthens a shutdown like moral outrage. After: Close the Loop Check in: “Are you ready to talk, or should we start in text?” Debrief: Identify triggers and what helped. Solve the actual problem. 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Fact Check: 	
If you're an American citizen
with a phone, Israel has all of
your data. Thanks to Trump's
new bill. Trump is using
Palenteer, an Israeli AI data
paste to collect information on
US citizens on their cellphone.
And the man in charge of
Palote, an Israeli citizen who
is best friends with Israel's
president. Here they too are
right here. Now Paloteer who
has ties with the Israeli
government now has full control
over your phone. They're giving
us information over to the US
government and probably Israel.
And if you're wondering yes
this is in effect. Make sure
False

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Detailed fact-check analysis of: If you're an American citizen with a phone, Israel has all of your data. Thanks to Trump's new bill. Trump is using Palenteer, an Israeli AI data paste to collect information on US citizens on their cellphone. And the man in charge of Palote, an Israeli citizen who is best friends with Israel's president. Here they too are right here. Now Paloteer who has ties with the Israeli government now has full control over your phone. They're giving us information over to the US government and probably Israel. And if you're wondering yes this is in effect. Make sure

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