For Tennessee shooters who value precision and reliability, the FN 5.7x28mm 40gr FMJ SS201 ammunition offers a consistent option for range training and target practice across the Volunteer State. Whether you’re dialing in your optic at a Chattanooga shooting range or working on follow-up shots at a Knoxville outdoor facility, this 50-round box delivers the ballistics you expect from FN’s factory load. With its full-metal jacket profile, this ammunition is designed to feed reliably in compatible firearms while providing predictable performance in varied Tennessee weather conditions.
What This Product Is and Who It’s For
The FN 5.7x28mm 40gr FMJ SS201 is a factory-loaded ammunition cartridge produced by FN America, the original manufacturer of the 5.7x28mm round. This 50-round box contains 40-grain full-metal jacket projectiles, intended primarily for target shooters and plinkers who require consistent accuracy and function from their ammunition. It is suitable for range use, training drills, and recreational shooting with firearms chambered in 5.7x28mm, such as the FN Five-seveN pistol or the PS90 carbine. While not specifically marketed for hunting or home defense, the 5.7x28mm cartridge has found use in personal protection scenarios due to its low recoil and high magazine capacity, though this FMJ load is optimized for target applications. Collectors and enthusiasts who value factory-original ammunition for their FN firearms will also appreciate the SS201 designation, which indicates standard-pressure FMJ loading from the manufacturer.
Key Spec Breakdown
- Caliber: 5.7x28mm
- Bullet Weight: 40 grains
- Bullet Type: Full Metal Jacket (FMJ)
- Model: SS201
- Manufacturer: FN America (FN GUNR)
- Box Count: 50 rounds
- Muzzle Velocity: Approximately 1,950 feet per second (from a 10.4-inch barrel; varies by firearm)
- Muzzle Energy: Approximately 340 foot-pounds
- Primer Type: Boxer, non-corrosive
- Case Material: Brass
- Package Weight: Approximately 1.1 pounds per box
Feature Deep-Dive
The FN 5.7x28mm 40gr FMJ SS201 ammunition is built around a 40-grain full-metal jacket bullet that is engineered for stable flight and consistent terminal performance on paper targets. The FMJ design ensures reliable feeding in both pistols and carbines, as the rounded ogive and smooth jacket reduce friction in the chamber and magazine. This is particularly important for semi-automatic firearms like the FN Five-seveN, where ammunition must cycle through the action without hang-ups. The 40-grain weight strikes a balance between velocity and recoil, allowing shooters to maintain sight alignment during rapid fire strings.
The SS201 designation refers to FN’s standard-pressure loading, which differs from the SS190 armor-piercing round or the SS197SR sporting load. This makes the SS201 a practical choice for range use, as it delivers the same ballistics as military training ammunition without the legal restrictions associated with AP projectiles. The brass casing is reloadable for those who handload, though most shooters will use this ammunition as factory-fresh rounds. FN’s manufacturing standards ensure consistent primer seating and powder charges, which translates to predictable point-of-impact shifts from shot to shot.
In terms of ballistic performance, the 5.7x28mm cartridge is known for its flat trajectory and low recoil impulse compared to traditional pistol calibers like 9mm or .45 ACP. The 40-grain FMJ at 1,950 fps produces minimal muzzle rise, making it easier for newer shooters to stay on target. Experienced marksmen will appreciate the ability to place follow-up shots quickly without adjusting their grip. The cartridge’s small diameter also means higher magazine capacities—up to 20 rounds in the FN Five-seveN pistol and 50 rounds in the PS90 carbine—which is advantageous for extended range sessions.
This ammunition is loaded with non-corrosive Boxer primers, which are standard for modern centerfire cartridges. Non-corrosive primers reduce the risk of barrel and chamber rust after shooting, which is a practical benefit for Tennessee shooters who may store firearms in humid basements or gun safes. The brass cases are annealed for ductility, reducing the likelihood of case splits during extraction. While this does not affect accuracy directly, it contributes to overall reliability in semi-automatic actions that rely on proper case ejection.
For shooters who use suppressors, the 5.7x28mm FMJ load is subsonic in some barrel lengths but supersonic in most standard configurations. The SS201 loading is supersonic from typical pistol barrels, producing a crack that is characteristic of the caliber. Suppressor use will reduce the muzzle report but not eliminate the sonic boom. This ammunition does not contain any special flash-suppressant compounds, so it will produce visible muzzle flash in low-light conditions. For indoor range use, this is not a concern, but outdoor shooters at dusk may notice the flash during rapid fire.
The packaging is a standard 50-round cardboard box with internal dividers to keep cartridges separated during transport. FN uses a distinctive blue-and-white box design that is easy to identify on a shelf or in a range bag. Each box is sealed with a label that includes lot number and manufacturing date, allowing for traceability if needed. This is a small detail but useful for shooters who track different lots for accuracy comparisons.
Ideal Use Cases
- Range Training: The consistent velocity and reliable feeding make this ammunition a solid choice for practice sessions at indoor or outdoor ranges. The low recoil allows shooters to focus on fundamentals without fatigue.
- Plinking: For informal target shooting with steel plates or paper targets, the 40-grain FMJ provides adequate energy to activate reactive targets without excessive wear.
- Competition: Some pistol competitions allow 5.7x28mm firearms in certain divisions. The SS201 load meets power factor requirements for USPSA and IDPA in most cases, though competitors should verify with their specific match rules.
- Firearm Familiarization: New owners of 5.7x28mm firearms can use this ammunition to break in their pistol or carbine and confirm function before relying on defensive loads.
Compatibility Notes
This ammunition is designed for firearms chambered in 5.7x28mm, including the FN Five-seveN pistol, PS90 carbine, and AR-15 upper receivers converted to this caliber. It functions in all standard 5.7x28mm magazines, including FN factory magazines and aftermarket options from Promag or Elite Tactical. For holster compatibility, the ammunition itself does not affect holster fit, but the FN Five-seveN pistol requires holsters specifically molded for its profile. Accessories such as speed loaders for 5.7x28mm magazines are available from brands like Maglula and should work with this ammunition. This FMJ load is not recommended for use in firearms with ported barrels or compensators, as the jacket material can accelerate lead buildup in ports. Always verify that your firearm is rated for 5.7x28mm ammunition before use.
FAQ Section
1. Can this ammunition be shipped directly to my home in Tennessee?
Yes, tn-guns.com ships ammunition to residential addresses within Tennessee, provided you are 21 years or older and comply with state and local laws. Ammunition is shipped via UPS or FedEx with adult signature required. We do not ship to P.O. boxes.
2. Do I need an FFL to purchase this ammunition?
No, ammunition purchases do not require an FFL transfer in Tennessee. You do not need to go through a federal firearms licensee for this transaction. However, we may verify your age and identity at the time of delivery.
3. Is this ammunition compatible with my FN Five-seveN pistol?
Yes, the SS201 loading is factory ammunition from FN and is designed to function in all FN Five-seveN pistols, as well as PS90 carbines and other 5.7x28mm firearms. It is a standard-pressure FMJ load and will cycle reliably in these platforms.
4. What is the warranty on this ammunition?
FN America warrants this ammunition against manufacturing defects in materials or workmanship. If you experience a malfunction due to a manufacturing issue, contact FN’s customer service with the lot number and purchase receipt. tn-guns.com does not provide an additional warranty beyond the manufacturer’s terms.
5. What is your return policy for ammunition?
Due to safety regulations, ammunition sales are final. We do not accept returns or exchanges on ammunition once it has left our facility. If the product arrives damaged or incorrect, please contact us within 48 hours of delivery with photos of the packaging and contents for resolution.
Closing CTA
This FN 5.7x28mm 40gr FMJ SS201 ammunition is in stock and available for immediate shipping to Tennessee addresses. Order a 50-round box or multiple boxes today from tn-guns.com, your licensed FFL retailer serving shooters across the state. We ship from our Tennessee warehouse with tracking and adult signature confirmation.
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