One other caliber debate! Why? Since you love ’em, that is why.
5.7×28 might need one of many cooler origin tales, so far as ammo goes, however 9mm has mainly each struggle within the final 120 years. That’s a whole lot of avenue rep.
What is healthier, what’s finest, and why are a bit advanced. However we’ll dig into it and see if we are able to’t break it down for you effective readers.
5.7x28mm Vs 9mm: The place They Got here From
Let’s get began by having a look on the historical past of every of those formidable cartridges.
We’ll begin with 9mm Luger (aka 9x19mm Parabellum, 9mm Parabellum, or simply 9mm) because it’s the older of the 2. Relationship again to its introduction in 1902 by Georg Luger, the famend Austrian gun designer, this cartridge was developed to satisfy the calls for of navy functions, and particularly for the German Luger P08 pistol.
9mm rapidly grew to become extremely widespread for simply these types of functions. Over time, 9mm has earned world acclaim, being adopted by quite a few navy and regulation enforcement businesses for its reliability, versatility, and confirmed efficiency.
Its comparatively compact dimension, manageable recoil, and efficient ballistics made it an excellent selection for handguns. Throughout the a long time, 9mm has undergone varied modifications and enhancements, guaranteeing its continued relevance and flexibility within the firearms group.
In distinction, FN 5.7x28mm was developed by the legendary FN Herstal, a Belgian firearms producer, within the late Eighties. Actually, it was particularly designed to switch 9mm. Initially designed for the FN P90 submachine gun and the FN 5-seveN pistol, this cartridge aimed to ship enhanced penetration, lowered recoil, and elevated journal capability.
The event of 5.7x28mm was closely influenced by the idea of “private protection weapons” (PDWs). PDWs are compact firearms that bridge the hole between handguns, SMGs, and rifles, providing improved vary and a few armor-piercing capabilities.
The 5.7x28mm cartridge was particularly designed to maximise the potential of PDWs, enabling them to defeat physique armor (up to a degree) and ship correct fireplace at prolonged ranges. However, as we’ll see, a lot of that isn’t as related in the present day because it was again within the Chilly Warfare.
5.7x28mm Vs 9mm At this time
Quick ahead to the current day, and each 5.7x28mm and 9mm have secured their locations within the firearms realm.
9mm Parabellum, being some of the widespread and broadly used handgun cartridges, finds in depth utility within the navy, regulation enforcement, and civilian sectors. Its effectiveness, manageable recoil, and journal capability make it a most well-liked selection for self-defense functions. 9mm gives a very good stability between stopping energy and controllability, permitting shooters to ship correct and fast follow-up photographs.
In navy contexts, 9mm is usually used as the usual pistol cartridge for armed forces all over the world. 9mm’s efficiency traits and its observe file in real-world engagements make it a dependable selection for navy personnel. Properly, so far as a pistol cartridge can.
Regulation enforcement businesses additionally find it irresistible for related causes. Furthermore, the supply of high-capacity magazines and the vast number of ammunition hundreds tailor-made for regulation enforcement additional solidify its place as a most well-liked selection.

Amongst civilians, 9mm is a well-liked cartridge for hid carry, dwelling protection, and leisure capturing. Moreover, the huge number of 9mm handguns in the marketplace permits people to decide on a firearm (usually a number of) that most closely fits their preferences and necessities.
5.7x28mm, alternatively, doesn’t have practically the identical recognition as 9mm. Nonetheless, it’s managed to garner its fair proportion of lovers and located its area of interest in specialised roles that demand particular traits.
For instance, it’s usually utilized by specialised navy and regulation enforcement models that require elevated penetration capabilities and prolonged vary. The excessive velocity and armor-piercing nature of 5.7x28mm make it efficient in opposition to soft-armored targets, making it appropriate for some tactical eventualities.
Moreover, 5.7x28mm has discovered its area of interest amongst civilian shooters who recognize its distinctive attributes. Some people worth its lowered recoil, which permits for improved management and sooner follow-up photographs. It additionally enjoys reasonable recognition amongst safety personnel and armed guards.
In case your job is to guard a financial institution or a armored automobile stuffed with money, a pistol that may defeat soft-body armory and maintain a boatload of ammo per magazine may be very interesting.
5.7x28mm Vs 9mm Dimensions
To achieve a greater understanding of those cartridges, let’s dig into the technical specs. Check out this chart evaluating the size of those two rounds:
Guardian Case | Bullet Diameter | Case Size | Total Size | Case Capability | SAAMI Max Stress | |
5.7x28mm | None | 5.70 mm (0.224 in) | 28.90 mm (1.138 in) | 40.50 mm (1.594 in) | 0.90 cm3 (13.9 gr H2O) | 345.00 MPa (50,038 psi) |
9x19mm | 7.65mm Luger | 9.01 mm (0.355 in) | 19.15 mm (0.754 in) | 29.69 mm (1.169 in) | 0.862 cm3 (13.30 gr H2O) | 241.3165 MPa (35,000.00 psi) |
Analyzing the numbers, we are able to clearly see that FN 5.7x28mm encompasses a narrower bullet diameter, longer case size, and bigger total size when in comparison with 9mm. Moreover, it boasts a bigger case capability and a better SAAMI most strain. These distinctions considerably impression the efficiency traits of every spherical.
By The Numbers: Ballistic Comparability:
Primarily based on simply the bigger case capability and better max strain, we’d typically assume that 5.7mm would have a better velocity and vitality and due to this fact a flatter trajectory, and that’s partially true. Nonetheless, that’s solely a part of the story due to one different main issue: bullet dimension.
Check out the ballistics and see what we imply:
Cartridge | Muzzle | 50 Yards | 100 Yards | |||||
Velocity | Power | Velocity | Power | Trajectory | Velocity | Power | Trajectory | |
5.7x28mm, 40 gr | 1800 fps | 288 ft-lbs | 1510 fps | 203 ft-lbs | 0.1” | 1271 fps | 144 ft-lb | -2.7” |
9mm Luger, 115 gr | 1210 fps | 374 ft-lbs | 1071 fps | 293 ft-lbs | -0.8” | 981 fps | 246 ft-lb | -8.2” |
*Compares producer’s claims for Speer Gold Dot Private Safety
Due to its considerably bigger bullet, 9mm is definitely able to increased energies than 5.7mm. Nonetheless, these aren’t sufficient to offset the opposite components we simply talked about since 5.7mm takes the sting in velocity, leading to an total a lot flatter trajectory.
Energy & Efficiency
Given the upper vitality of the 9mm, it excels in eventualities that demand stopping energy and vitality switch. This spherical is especially appropriate for self-defense, regulation enforcement, and navy functions the place quick incapacitation is essential. 9mm’s bigger bullet diameter contributes to a wider wound channel, enhanced by good ammo selection.
In distinction, 5.7x28mm, with its excessive velocity and flat trajectory, finds its power in extended-range accuracy and armor-piercing capabilities. It’s a compelling selection for specialised functions that require enhanced penetration and prolonged efficient vary. That stated, 5.7x28mm remains to be a lot efficient on meat, even with out the bigger bullet. Between the rounds capacity to fragment, bounce round, and usually trigger a whole lot of harm, 5.7x28mm can chew up meat.
Recoil & Shootability
In relation to recoil, 5.7x28mm tends to exhibit much less felt recoil in comparison with 9mm. This attribute permits for sooner follow-up photographs and improved shootability, making it an interesting possibility for shooters who’re recoil-sensitive or search a extra manageable capturing expertise.

9mm, whereas having a barely increased recoil, stays controllable for many shooters, particularly with correct coaching and method.
Ammunition Availability & Price
Now, let’s focus on practicality. 9mm holds a major benefit by way of ammunition availability and value. It has established itself as some of the widespread handgun cartridges worldwide, boasting an unlimited array of ammunition choices, together with reasonably priced selections. This vast availability ensures easy accessibility to ammunition and gives shooters with a various number of hundreds.
Alternatively, 5.7x28mm, though gaining one thing of a cult following, gives a restricted vary of ammunition choices, which might translate to increased prices in comparison with 9mm. Availability might differ based mostly on location and native firearm rules, so it is important to contemplate this side when making your determination.
Usually talking, 5.7x28mm is about double the value of 9mm for coaching ammo and roughly par for defensive ammo.
Make It Easy
In relation to choosing a cartridge, all of it boils right down to your particular wants and preferences, so it’s unimaginable, even for consultants like us, to say one in all these rounds is inherently higher than the opposite. Should you prioritize uncooked vitality, stopping energy, and vast ammunition availability, 9mm emerges as a transparent winner. It has a confirmed observe file, in depth adoption, and flexibility for quite a lot of functions.

Nonetheless, when you search extended-range accuracy, enhanced penetration capabilities, and lowered recoil, 5.7x28mm could also be an acceptable selection for specialised eventualities the place its distinctive attributes shine.
In the end, I feel each 5.7x28mm and 9mm supply their very own benefits and excel in several areas, so take into consideration your supposed goal, capturing preferences, and the supply of ammunition earlier than making your remaining determination. And, in fact, you’ll be able to all the time simply select each. The extra the merrier relating to the contents of a gun protected, when you ask me.
That being stated… except you perceive your area of interest and you’ve got an actual want for one thing like 5.7x28mm, 9mm goes to be your higher guess total. Being completely different simply to be completely different isn’t a terrific thought.
Parting Pictures
As we conclude our exploration of the 5.7x28mm versus 9mm debate, do not forget that firearms and ammunition choice is a extremely private selection. It is important to grasp the strengths and limitations of every cartridge, consider your wants, and contemplate components resembling energy, recoil, availability, and value.
With this information in hand, you shouldn’t have any downside making an knowledgeable determination and embarking in your capturing adventures with the proper cartridge by your facet.
Completely satisfied capturing! Keep protected, keep accountable, and keep strapped.
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