7.92x24mm and 5.7x28mm ballistic gelatin impacts
7.92x24mm and 5.7x28mm gelatin impacts. Shooting tests and bullet evaluation. Penetration and wound cavity compared to FBI demands and mission failures. 9x19mm, 30 Super Carry and 7.62x25mm Tokarev. Special body armor to stop these AP rounds.
These are old test results from around the year 2005, conducted in Flanders based on the Belgian certificate of recognized person for the development of firearms and ammunition from Rik Van Bruaene. There are no weapons or ammunition parts for sale! This is only an informative blog.
Block 1 calibration 6.5 cm at 466 fps / Block 2 calibration 6.3 cm at 426 fps
20” / 50 cm straight line tumbling penetration total penetration depth 24 inch. This allows, with good shot placement, to hit the spine and other vital organs deep in the body, even of large and heavy adult persons. The 5.7x28mm bullet deviates considerably from its straight path during impact. Even with a well-placed shot, you can never guarantee that you will reach the spine or vital organs deep within the body to neutralize the opponent.
Penetration depth 24 inch / 61 cm in calibrated bare gelatin.
The 7.92x24mm FMJ bullets are comparable with the .30 Super Carry and the 7.62x25mm Tokarev. As most FMJ rounds, they have over-penetration according to FBI ballistic penetration demands. However, the first FBI penetration demands were 12” to 14” initially, later it changed to 14” to 16”, and again later to a maximum of 18”. The 7.92x24mm caliber was designed to compete with the 5.7x28mm cartridge and to perform well at midrange for use in PDWs.
7.92x24mm FMJ-RN Blue Tip 71 grains
The 7.92x24mm cartridge is quite powerful and intended to perform well at midrange, but does it really need to be pushed to the maximum when it's intended for close-range use? The 7.92x24mm FMJ-RN Blue Tip 71 grains with a reduced powder charge still functions well in compact pistols but has a penetration depth in calibrated bare gelatine of only 18” / 457 mm. Also, bullets with a lower weight around 57 grains reduce the penetration depth and recoil. This should better satisfy the FBI penetration limits and public safety compared to a 9x19mm FMJ round.
While hollow point bullets are banned for civilian personal defense in most European countries, in the United States they are generally used by civilians and law enforcement. The test results of the 30 Super Carry hollow point bullets confirm that even a smaller bullet diameter can still have significant wounding potential. The 7.92x24mm, with even higher velocity, confirms this conclusion. This .32 bullet expands to 17.2 mm, which is .62 inch. That is significantly more than what a 5.7mm bullet can do. Hollow point bullets expand fast and have less penetration in soft body armor.
Where an important role for civil resistance during an occupation was reserved for the 9x19mm caliber with a wide distribution of ammunition, the 5.7x28mm caliber is banned in most European countries. The 5.7x28mm caliber can never fulfill this role of civil resistance and large distribution of ammunition. Most types of 5.7x28mm ammunition can, if needed with some small modifications, penetrate soft police body armor. This is not the case with the .32 caliber. The 5.7x28mm pistols already have great value on the South American illegal criminal market with the aim of piercing the bulletproof vests of police officers.
Flexible body armor to stop AP handgun rounds developed in Flanders by Rik Van Bruaene. For more info about enhanced flexible body armor contact us.
The 5.7x28mm caliber is already adopted by several NATO countries, and the American firearms industry is also starting to manufacture different kinds of 5.7x28mm firearms, including pistols, carbines, and submachine guns. Different types of ammunition are already available on the market.
5.7mm 2BF bullet impact at bare gelatine
Despite the 5.7x28mm caliber pistols being quite big and not suitable for concealed carry, this caliber is starting to gain many users on the American civilian market. With low recoil and the penetration of soft body armor in mind, most people do not care much about the limited incapacitation performances of this 5.7 mm caliber. However, this is a double-edged sword. On one side, the great popularity of the 5.7x28mm pistols not only increases their appearance and use for personal defense, but on the other side, it will also increase the appearance of the weak points of this 5.7x28mm caliber regarding limited stopping power, problems with premature tumbling, and poor penetration. The known mission failures among Special Forces who used the 5.7x28mm caliber before will also appear among civilian personal defense users. A new Miami shootout failure is imminent.
It is generally known that in a firefight, the hands and arms of the opponent are in many cases hit first before the bullet penetrates the upper body. The resistance of the arm is big enough to make the 5.7 bullet tumble. This causes a large exit wound in the arm, but once the bullet has tumbled base-first, it loses its wounding potential when it enters the chest cavity in a slant or base-first position, resulting in insufficient penetration and a small wound cavity no bigger than that of a .22LR bullet. This simple setup of two ballistic gelatin blocks, one 30 cm from the other, already provokes premature tumbling.
7.92x24mm N BAP 90 grains sharp bullet vs. 5.7x28mm SS 109 bullet
It is quite ridiculous to compare the 5.7x28mm penetration capabilities with an old 9x19mm FMJ round. Other new calibers like 30 Super Carry and 7.92x24mm also provide impressive performances.
.32 / 7.92mm BAP bullet - 12 inch penetration out of a 3 inch barrel
Link to Dual Use concealed bulletproof vests
Dual Use 3A concealed body armor vests can use flexible 25x30cm enhanced inserts to stop armor piercing handgun ammunition like 5.7x28mm, 7.62x25mm Tokarev steel core, 9x19mm steel core, and other AP handgun ammunition.