Many people are interested in buying the FN 5.7 x28mm ammunition for self defense and also buy them for concealed carry . This dispute goes that it goes through body ammo ( which in fairness it really does ; select loadings are known for deep penetration till level IIIa and many get greater capacities which means that they are MOAR ARMD so something to that effect
None of these are to be called bad rounds either are the Guns chambered to be called Bad guns They are not
FN 5.7 x28mm AMMO Ballistics
Not all published 5.7x28mm ballistics will be the same. You should take any advertised figures with a large ‘ole grain salt.
Here are the reasons:
Ammunition manufacturers don’t always advertise what their test weapon was. The FNH P90 has a 10.6-inch barrel and a 16.4 inch barrel. 5.7mm can also be used in it. The FN FiveseveN’s 4.82-inch barrel and the Ruger-57‘s 4.94-inch barrel will produce less velocity and energy than the P90.
A 5.7mm projectile can be fired from the P90 at speeds exceeding 2,000 fps. The P90’s muzzle energy is greater than 340 ft.lbs., with a top speed of close to 3,000fps. A Ruger 57 or FiveseveN pistol will produce a velocity close to 1600 fps with a 40-gr load. Muzzle energy is closer to 220 Ft-lbs.
Keep in mind that this is more like a ballpark than gospel. There are many loads available on the market so there might be a bump in one of these figures. The gist of it all is that 9mm is faster than, but less powerful in terms of ft-lbs force than 9mm.
Also, the recoil is half as high. It takes a lot longer for the 5.7x28mm or 5.7 x28 ammo to fall, and it doesn’t drop below point of aim until 150m.
Granted, you aren’t buying it for power alone, it’s for increased magazine capacity and penetrative ability, if practical purposes are why you bought one or are considering one.
The point here is that outside of certain attributes – a definite ability to penetrate body armor, flatter trajectory and greater magazine capacity – it’s not some sort of ballistic wunderkind. Although it performs well considering the projectile’s size, some argue that it is not a great leap forward.
What about in the real world? Testing is not enough; efficacy is what matters in the real world.
5.7 x28mm In Actual Use
Do you have any information on 5.7x28mm actual usage?
It’s not much, but it does have some.
It is used by many military and police units. However, it does not have the P90. It seems to work well enough that they continue to buy it.
Although it isn’t something you want to think about, the Ft. The 2009 Hood shooter used an FNH FiveseveN to commit his crimes. Trey-two were injured, while 13 were killed. The conclusion is that lethality…has been established, even with center-of mass hits. It is alleged. If anyone finds autopsy reports or any other official documentation that supports it, please let us know. The 5.7mm rounds fall in tissue, leading in greater blood loss.
I have not found any official information about the round’s use as a weapon in either police or defensive shootings. A number of people have shared second- and third-hand information on agency use of P90s via message boards and forums. The results are mixed. Some people found them very effective while others did not.
More information on Fiveseven
The 5.7x28mm round is effective in real life, despite its shortcomings compared to other personal defense cartridges. The 5.7mm round has a flatter trajectory which allows you to hit targets at a greater distance. Although it is effective against soft armor, it won’t penetrate fleshy targets as well. There are many more rounds that you can carry. However, 9mm is still the standard for many good reasons and is unlikely to change.
You have to pay for this privilege. The guns cost more. They aren’t the easiest pistols to conceal. It is more expensive and not as readily available. Are those benefits worth the extra costs? That’s up to each individual.
There is no perfect cartridge. It all comes down to what limitations you’re comfortable with.