FN 5.7×28 mm 40gr Ammo

FN 5.7×28 mm 40gr Ammo Overview

The FN 5.7x28mm 40 grain cartridge is the standard loading for this specialized high-velocity pistol and personal defense cartridge. Developed by FN Herstal alongside their Five-seven pistol and P90 personal defense weapon, this ammunition was designed to provide improved ballistic performance over traditional handgun rounds. Buy FN 5.7×28 mm 40gr Ammo | where to buy 5.7x28mm ammo

The 40 grain projectile is constructed with a copper alloy jacket and a lead core. This lightweight bullet is propelled to velocities around 2,350 feet per second from the muzzle. The combination of high velocity and light bullet weight results in excellent armor penetration capabilities, allowing the 5.7x28mm to defeat soft body armor at close to medium ranges.

In terms of terminal ballistics, the 40 grain FN 5.7x28mm round exhibits rapid expansion and fragmentation upon impact. This results in good temporary and permanent wound cavities, making it an effective self-defense and duty round. The high velocity also gives the bullet a very flat trajectory, contributing to long-range accuracy. Buy FN 5.7×28 mm 40gr Ammo | where to buy 5.7x28mm ammo

Recoil impulse with the 40 grain loading is notably light, especially when fired from the compact and lightweight Five-seven pistol or P90 PDW. This allows for rapid follow-up shots and good controllability, important factors for personal defense and close-quarters engagements.

For both military/law enforcement and civilian self-defense applications, the FN 5.7x28mm 40 grain cartridge offers a compelling balance of ballistic performance, armor penetration, and shootability. Its specialized design and capabilities have made it a popular choice in its intended market segments.  Buy FN 5.7×28 mm 40gr Ammo | where to buy 5.7x28mm ammo

FN 5.7×28 mm 40gr Ammo Properties

Cartridge Specifications:
The 5.7x28mm 40 grain cartridge features an overall length of 44.75mm and a case length of 28mm. The projectile itself has a diameter of 5.7mm. This compact size allows the 5.7x28mm to be chambered in relatively small and lightweight firearms.

The 40 grain bullet is constructed with a copper alloy jacket and a lead core. This design provides a good balance of penetration and expansion on soft targets. FN also offers heavier 58 grain bullets for the 5.7x28mm, which sacrifice some velocity for increased sectional density and penetration.  Buy FN 5.7×28 mm 40gr Ammo | where to buy 5.7x28mm ammo

Ballistic Performance:
As mentioned, the 40 grain 5.7x28mm load achieves muzzle velocities around 2,350 fps. This results in over 500 ft-lbs of muzzle energy. The flat trajectory and low recoil make the 5.7x28mm an accurate round, especially at longer handgun ranges.

In penetration testing, the 40 grain 5.7x28mm has demonstrated the ability to defeat Level IIIA soft body armor at close to medium ranges. This armor penetration capability was a key design goal, allowing the 5.7x28mm to overcome the limitations of traditional 9mm and .45 ACP pistol rounds.  Buy FN 5.7×28 mm 40gr Ammo | where to buy 5.7x28mm ammo

Usage and Adoption:
The 5.7x28mm 40 grain ammunition was developed in parallel with the FN Five-seven pistol and P90 personal defense weapon. These firearms were adopted by military and law enforcement users seeking a more capable alternative to 9mm handguns.

Beyond the FN weapon platforms, the 5.7x28mm cartridge has also been chambered in other firearms, including the Ruger-57 pistol. This allows the round to be used in a variety of self-defense, duty, and recreational applications.

While initially focused on military and law enforcement markets, the 5.7x28mm 40 grain ammunition has also gained some popularity with civilian shooters looking for a high-performance self-defense cartridge. Its combination of ballistics, low recoil, and magazine capacity make it an appealing choice for certain users.  Buy FN 5.7×28 mm 40gr Ammo | where to buy 5.7x28mm ammo

Overall, the FN 5.7x28mm 40 grain loading represents a specialized and capable self-defense and duty ammunition developed to address the shortcomings of traditional handgun cartridges. Its unique performance characteristics have led to its adoption by military, law enforcement, and some civilian users. Buy FN 5.7×28 mm 40gr Ammo | where to buy 5.7x28mm ammo