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Fmj Ammo, Difference Between Jhp, Tmj, And Fmj

Tmj Ammo means Full Metal Jacket. A full metal jacket is a type of bullet made up of an inner core and an outer case. The case protects the soft inner core, which is made of lead, from melting quickly and is made of hard metal. Fmj ammo is also known as a full metal case.  

What Does Tmj Ammo Mean In Ammo?

Fmj ammo has great penetration against soft tissues, and they are used to hold trajectory. Fmj rounds do not expand when it hits the target. Therefore they are an excellent choice for target shooting.

Does Fmj Increase Damage?

For self-defense, fmj bullets have one drawback. They can hit an unintended target because they can easily penetrate soft objects since the bullets do not expand.

When fmj ammo is impacted at rifle velocities, they cause a lot of damage, they can penetrate all through the body easily and create a shockwave as they slice through the body which can be very devastating.  

Tmj Ammo Advantages – Benefits Of Tmj Ammo Ammo?

  • Fmj ammo is very accurate.
  • The casing prevents the lead in the soft inner from depositing itself as it fires.

What Is Fmj Ammo Good For?

Fmj ammo is best used for shooting and range practice because they are less expensive, and there is no risk of hitting an unintended target in these activities.

Why Does The Military Use Tmj Ammo?

Declaration III at the Hague Convention of 1899, prohibits the use of expanded bullets in international warfare. Fmj ammo is used by most NATO military, but the USA never consented to the treaty officially, and they adopted the use of hollow points.

In terms of performance, fmj ammo penetrates more than hollow points bullets. For military purposes, high penetration is important to go through protective equipment like helmets, covers, etc.

In terms of cost, fmj is less expensive than its counterparts. For example, the US military fires hundreds of millions of ammo from its FMJ armory every year, and the difference in cost is an important factor to consider.

Tmj Ammo Disadvantages

  • They are not ideal for self-defense.
  • They can cause collateral damage because of high penetration.

What Is Fmj Ammo Good For? Common Uses For Tmj Ammo Ammo

When Fmj ammo is used in semi-automatic weapons, they display excellent performance, and the feed is reliable. Hence FMJ ammo is a good choice for both military use and target shooting.

Fmj Ammo For Self-Defense

Fmj ammo is not ideal for self-defense because it can penetrate through the target and hit an unintended target down the range. 

Tmj Ammo Ammo For Home-Defense

For home defense, fmj bullets are not the first option because of the risk that comes with it. It can easily hit an innocent target. Nonetheless, fmj ammo can still be used for home defense but you must know what is beyond the target.

Are Full Metal Jacket Bullets (FMJ) illegal for Hunting?

Fmj bullets are illegal in the lower 48 states in the US because it over penetrates and deforms. They have high penetrating power, and there are no species in many states in the US that need that amount of penetration to get hunted. 

Nonetheless, fmj ammo is accepted worldwide, and they are recommended for use against certain animals that have a thick hide. Some examples of these types of animals are cape buffalo, elephants, etc. 

Cautions When Using Full Metal Jacket Bullets

Full metal jacket ammo is made to penetrate soft objects more quickly than other regular bullets that expand. Firearm owners and hunters consider the ability of fmj ammo to go through objects easily a disadvantage because they tear through organs. When shooting fmj ammo, it is always important to know the target range, that is the target, and what is behind the target. 

What Is A Jacked Hollow Point Bullet (JHP)

JHP stands for jacked hollow point and is a type of bullet with a hollow tip. Hollow point bullets are made to expand when they hit the target, and they are the ideal ammo for self-defense.

In the 19th century, hollow point bullets (jhp) were first marketed as express bullets. These bullets were hollowed to reduce bullet mass and increase Tmj Ammo. After the creation of smokeless powder, soft point bullets and jacketed hollow points bullets were developed around 1890.

Hollow point bullets are used primarily for handguns in modern ammunition because handguns operate at a velocity lower than rifles. At the velocity of a handgun, hollow point bullets expand reliably.

What Are Hollow Point Bullets Designed For?

Hollow point bullets are designed to ‘Tmj Ammo’ when they hit a target. Mushroom is the process where a hollow point bullet hits a target, and then pressure is created in the pit, which forces the tip of the material to expand and increase in diameter. 

Hollow point bullets are used when penetration needs to be controlled. The design of hollow points makes them effective for two things; primarily to hit the target and also safe for bystanders. This makes hollow point bullets the ideal ammo for self-defense and hunting.   

What Does Tmj Ammo Mean?

TMJ stands for total metal jacket. Tmj ammo is a type of bullet that is encapsulated by a thin jacket usually made of copper. The copper jacket covers the bullet; hence, the lead is not exposed. Tmj ammo has similar ballistic properties to fmj ammo, and they are used for range shooting.  

What Is The Difference Between Hollow Point And Fmj?  Hollow Point Vs. Fmj 

The hollow point vs. fmj argument is one of the Tmj Ammo ammo discussions. Both types of ammo have their peculiarities, but we will highlight their significant differences.


In terms of cost, hollow point bullets are more expensive than FMJ ammo. This makes FMJ ammo the perfect ammo for range shooting or target shooting. 


Hollow point bullets are used in self-defense and hunting animals because they expand and do not tear the target’s organs. The military uses FMJ ammo because of its penetration power that tears through protection gears.


When fmj ammo hits a target, it is designed not specifically to expand or have a trajectory change and can hit whatever is behind the target. Unlike the jhp ammo that develops and transfers its energy to the target.


Jhp bullets are more accurate than fmj ammo because it is easier to maintain better tip shape consistency of the ammo. Also, the aerodynamic properties of hollow point bullets are superior.  

Hollow Point V.S Fmj Damage

Both bullets are lethal. Using a 9mm, for example, when a 9mm jhp bullet is fired, it deforms as soon as it hits the target. Also, a 9mm fmj bullet drills a hole in the target as it comes out on the other side. Also, the price of an FMJ 9mm ammo box differs from that of a hollow point.

Using the same caliber, same trajectory, and same energy. Hollow point bullets are considered more deadly because they expand and transfer the total energy inside the target, leaving multiple holes in it as it deforms. The Fmj bullet creates a single hole in the target and does not expand.  

Which Is Better, Fmj Or Jhp (Hollow Point)

Both types of ammo serve their particular purpose. If you are a new firearm owner and want to practice target shooting, then you should opt for FMJ ammo. The Military uses FMJ ammo because of its high penetration power. At the same time,  hollow point bullets are regarded as self-defense round or home defense rounds because it is the ideal bullet for such purpose.

What Is The Difference Between Tmj And Fmj? Tmj Vs Fmj 

Tmj ammo and fmj ammo are similar in ballistic properties, but we will talk about the difference between both ammo in this section – tmj vs. fmj

To differentiate TMJ ammo from FMJ ammo, it is also called FEB-FMJ, where FEB stands for ‘fully enclosed base’. For TMJ ammo, the jacket covers every part of the bullet including the base but the jacket covers everything but the base for FMJ ammo.

TMJ ammo prevents vaporizing of lead because it is fully enclosed, Unlike FMJ bullet that exposes some amount of lead into the air when fired. 

Is Tmj Better Than Fmj?

In general, TMJ was made to improve on the flaws of FMJ ammo. Most importantly, to reduce the health risk caused by lead exposure on police officers when they fire FMJ ammoIn terms of accuracy, TMJ ammo is more accurate than FMJ ammo for similar projectiles because of the uniformity on the jacket of TMJ. TMJ is preferred ammo over FMJ because it is environmentally friendly and does not expose lead to the environment. Also, it makes TMJ suitable for indoor shooting practice and conducive for children. 

Common Ammo Cases Types

The casing is another important part of a cartridge. The casing of a cartridge has nothing to do with how the bullet is made, but firearm owners have different preferences on the type of casing they want. There are 4 main casing types:


Brass-cased ammo has some key attributes: They are strong, easy to reload, and resistant to corrosion. 


Steel-cased ammo is versatile, cost-effective, and available in different calibers


Aluminum-cased ammo is also cost-effective, just like steel. They are also durable and lightweight.

Plated Case

They have high corrosion resistance. For revolvers, they are easy to load and unload. They also feed well into semi-automatic firearms.

Is 9mm Fmj Bullets Good?

Yes, the 9mm fmj bullet is a good bullet for shooting practice and target shooting. It is also cost-friendly. At Ammo & Gun Depot, we sell the best 9mm fmj bullets on the gun market. Whether you want to learn how to shoot or want to improve your shooting skills, then you need to get a 9mm FMJ.


The choice of cartridge and bullet is as important as getting a rifle or shotgun for self-defense or practice. Each bullet has its purpose. The FMJ is not suitable for indoor shooting, TMJ is preferable but the FMJ is used by the US military. JHP is suitable for self-protection because it reduces the risk of collateral damage. 


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A total metal jacket bullet or TMJ ammo is a bullet that is fully encapsulated by a jacket. Shooters use these rounds for range training as they have similar ballistic properties to full metal jacket or “ball” ammo.

TMJ vs. FMJ Ammo

a tmj bullet where the copper encloses the lead next to a fmj bullet

So, if they have similar ballistics, what’s the difference between a total metal jacket bullet and a full metal jacket bullet? You’d think that based on the name, they’d be the same thing. But total metal jacket (TMJ) and full metal jacket (FMJ) are actually two different things. In fact, TMJ has some advantages that make it preferable to FMJ for some uses.

A total metal jacket bullet might also be referred to as an FMJ-FEB, where “FEB” stands for “fully enclosed base.” This is to differentiate it from common FMJ ammo, where the jacket covers all of the projectile except for the base. TMJ bullets have a copper jacket that fully encloses the entire bullet, including the lead base.

Reduced Lead Exposure with TMJ Bullets

american eagle 45 ACP tmj ammo with toxic-metal free primer

I know you’re thinking, “okay that’s neat but also who cares and why?” Well, the big advantage of TMJ bullets is that they’re safer for use on indoor ranges. When you fire a traditional FMJ bullet, some of the lead from the exposed base of the bullet vaporizes into the air. You inhale that into your lungs, which gets into your bloodstream and eventually makes your kid get born with three arms or flippers. On indoor ranges, this can be a problem and can bump up your blood lead levels pretty rapidly. TMJ bullets don’t have that problem, because the enclosed base prevents the propellant from vaporizing lead.

TMJ bullets are also cleaner in your gun. Again, because they don’t have an exposed lead base, they’re not spreading molten lead down the barrel when they’re fired. This is a nice feature for shooters who run exceptionally high round counts for training. Speer makes their Lawman line of training ammo with a total metal jacket specifically to address leading in high round count LE guns.

TMJ Ammo Accuracy

ammo with gun and target

Unlike a traditional FMJ bullet, TMJ bullets are electroplated. Electroplating is…science that I don’t really understand, but what it does is evenly deposit a layer of copper over the entire lead bullet. The jacket on a TMJ bullet is, by necessity, thinner than a traditional FMJ jacket, but it also more uniform. This uniformity makes TMJ bullets inherently more accurate than similar FMJ projectiles — a feature that’s valuable to LE and competition shooters.

Why Choose TMJ Ammo?

9mm speer lawman tmj ammo and box

The primary reason to use a TMJ bullet is, as mentioned, lead mitigation. Despite the earlier joke, high blood lead levels are no laughing matter, and can lead to a number of serious health issues. In men, elevated BLLs can lower your sperm count, and in women they can induce stillbirth and miscarriages. This is in addition to causing joint pain, fatigue, memory loss, and a real nasty list of other bad things. Controlling blood lead levels is so important that some indoor ranges ban the use any ammo that has exposed lead, including traditional FMJ.

In fact, that was the original reason that Speer started offering their Lawman line of ammo with TMJ projectiles. Many LE agencies train on indoor ranges during the winter season. Administrators are rightly concerned about managing their cops’ blood lead levels because of this. In response to this concern, Speer developed their Lawman line with the TMJ. It remains their most popular non-JHP product today. (It’s also our best selling TMJ ammo.)

Less Gun Cleaning

TMJ bullets are an excellent tool for reducing inhaled lead during shooting. They’re great for recreational shooters, LEO, and competition shooters alike. They’re also cleaner for your gun, which is a nice win-win. Cleaning guns is boring, and TMJ projectiles mean you have to clean less. Even worse than cleaning guns is having to do chelation therapy to lower your BLLs.

If you spend a lot of time on indoor ranges, seriously consider switching to all TMJ rounds. After all, you don’t want to end up shooting blanks, right?

TMJ Ammo Meaning

A bullet with a total metal jacket (TMJ) is one that has a metal jacket, usually copper, that covers the entire bullet. These bullets often have a lead core, and the copper jacket is applied via a process called electroplating.

TMJ ammo was developed due to concerns over the amount of lead police officers were exposed to during winter training at indoor ranges while firing full metal jacket bullets (FMJ).

Why Use TMJ Bullets?

The primary reason why shooters use total metal jacket bullets is to reduce their amount of lead exposure experienced while enjoying their 2A Rights.

For over a century, full metal jacket bullets have been the go-to ammo of choice for target shooting due to their lower cost per round. However, FMJ bullets have a small amount of lead exposed at the base of the bullet as the FMJ’s jacket does not cover the entire bullet.

When a FMJ round is fired, the burning of the smokeless powder is hot enough to vaporize a small amount of lead on the exposed base of the bullet. This vaporized lead exits the barrel and can be inhaled by the shooter.

Total Metal Jacket Ammo

When shooting outdoors, the amount of lead exposure is negligible. However, when shooting at indoor ranges, the amount of lead exposure can begin to increase to more dangerous levels during high volumes of shooting.

Total metal jacket ammo eliminates this issue as it has a completely enclosed base as no part of the lead bullet is exposed to the environment.

Multiple ammo manufacturers offer TMJ bullets. The first factory TMJ rounds were Speer Lawman in response to concerns from law enforcement. Blazer by CCI quickly followed suit and now most all ammo producers have some types of ammunition that fire TMJ bullets.

Learn more about TMJ vs FMJ bullets!

TMJ and Lead Safety

It should be noted that the topic of lead inhalation while shooting is a highly debated topic. There is no concrete data that quantifies how much FMJ ammo needs to be fired to create dangerous levels of lead exposure while shooting indoors.

When shooting outdoors, the air dissipates vaporized lead to the point where it is negligible.

Although lead poising is more common in small children, side effects of lead poising in adults include elevated blood pressure, muscle and joint pain, headaches, and (more terrifying) low or abnormal sperm counts in men. Here at, we advocated keeping your mags loaded with live rounds and don’t want you shooting blanks!

However, the last thing any shooter wants to deal with is lead chelation therapy. As a TMJ bullet has a completely enclosed base, many indoor ranges require their use to minimize lead inhalation and lead dust on the range floors. This, along with lead abatement systems in indoor ranges, make shooting indoors cleaner and safer. Cases of health issues arising from FMJ ammunition are rare, but if you shoot at indoor ranges a lot using TMJ ammo might be a good precaution to take.

Total Metal Jacket Ammo

TMJ Bullets Shooting Properties

As TMJ bullets have an enclosed base, there will often be little to no lead fouling left in your barrel after a long shooting session. Lead fouling is a pain to remove, and as there will be no vaporized lead to deposit in the barrel, cleaning your handgun or rifle after shooting TMJ ammo should be a breeze.

Some shooters report TMJ rounds being more accurate and having more consistent muzzle velocities (FPS) than other types of ammunition as the base of the bullet on TMJ ammo is completely uniform. This provides the gunpowder a flat surface to push on, allowing for more shot-to-shot consistency.

One downside to TMJ bullets is that the copper jacket is relatively thin compared to other bullet options. This means there is the potential for copper to be sheared off the bullet when firing a handgun or rifle with a ported barrel or compensator. When using firearms with these accessories, it is advisable to use JHP or FMJ bullets.

TMJ For Self Defense?

TMJ rounds are for target shooting only and should not be used for self-defense.

TMJ bullets are not designed to expand, deform, or cavitate when they enter a target. They are normally round nose bullets designed for punching holes in paper. These types of bullets will often pass through a bad guy, potentially striking an innocent bystander.

Jacketed Hollow Point (JHP) bullets should always be loaded in your self-defense handgun as JHP ammo is designed to expand when it encounters tissue, causing additional damage and slowing the bullet down. This means the JHP bullet is more likely to remain inside the target and not over penetrate.

Total Metal Jacket Ammo

Some high quality JHP ammo would include Speer Gold Dot, Federal HST, and Hornady Critical Defense.

TMJ Bullets and Reloading

TMJ bullets are available for reloading in a variety of calibers and bullet weights for pistol and rifle rounds like the 9mm, 45 ACP, 223 Rem, and 308 Winchester. As a TMJ bullet has no exposed lead, it helps keep your personal lead exposure to a minimum and makes for cleaner shooting bullets.

Is TMJ Good Ammo?

Total metal jacket, or TMJ ammo, is very good for target shooting and was developed to reduce lead exposure at indoor ranges. It typically will leave less fowling in the barrel compared to FMJ ammo as TMJ bullets have an enclosed base.

Generally, TMJ ammo will have similar performance to FMJ bullets though some shooters report slightly improved FPS consistency and minor accuracy improvements when firing TMJ bullets.

If you shoot infrequently or only during hunting season, there is no pressing need to select a lead-free cartridge as you aren’t going through enough ammo for it to matter. However, if you prefer using indoor ranges or are a competition shooter, then TMJ bullets might be a good long-term investment. Regardless of which bullet type you choose, make sure you get all your ammo here at and flex those 2A Rights!

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