”AP rounds are made for piercing armor, not massive tissue damage, although the bullets do tumble and yaw which create larger wounds than other FMJ or AP rounds.”
Actually, just about all AP projectiles yaw in tissue, for example M2, M993, M995—all of which create substantially larger wounds than SS190.
”With the right ammunition, the 5.7x28mm cartridge will travel between 2100 and 2600 fps, a realm that produces severe hydrostatic shock and will produce MASSIVE wound cavities when combined with either hollow point or fragmenting bullets.”
Actually the projectiles create a larger temporary cavity, not hydrostatic shock; you might wish to read this basic information on wounding mechanism: https://www.m4carbine.net/showthread.php?t=34714
A decorated, experienced SWAT officer at a U.S. LE agency that has had multiple OIS incidents with 5.7 mm has written:
”The 5.7 pistol as a carry gun is a mistake. There are far more effective weapons and ammunition combinations out there. The only factor that comes close to equalizing the P90 (not the 5.7 pistol) is it’s full auto capability: 900 rpm of very controllable fire. Even this advantage is limited to close-in, CQB type engagements. I can put more rounds on target faster with the P90 than with my M4 in close contact engagements. Unfortunately you may HAVE to put more rounds in the threat due to the lack of damage the projectile causes. The 5.56 is far more effective at getting the attention of men than 5.7 mm. This is not speculation. We have been using 30 P90’s for five years now. There have been multiple BG’s shot with them. We will not be buying more 5.7 mm systems”
Pat Rogers, one of the most highly respected firearms trainers in the world, has also commented on the use of small caliber PDW’s like 5.7 mm:
[i]” Multiple rounds are required to incapacitate. This means significantly more training, which translates into significantly more ammunition expended, at a higher cost per round and with limited sources available.
To ensure immediate incapacitation, brain shots will need to be emphasized. Which requires more training, and also more insertion of luck into the equation- especially dealing with multiple opponents.
Limited capability within the system means engagement at anything outside of CQB distances may be problematic.
This means movement to objective, egress etc will present a whole new range of difficulties.
The gun is easy to shoot and fun as well. This does not always translate well to real world applications.
If there is a single reason why this platform is in any way superior to the M4 FOW, it is not apparent to me.”[/i]
A large Federal agency noted for their P90 adoption is also no longer running 5.7mm’s like they used to given all the numerous deficiencies noted over the last several years of service…
We hope to test the Elite Ammunition 5.7 loads this year. Unfortunately, from what has been released so far, the performance does not look particularly good:
http://www.youtube.com/watch?v=QOP3u7ueI-g&feature=player_embedded
http://www.fivesevenforum.com/viewtopic.php?f=8&t=1502
If EA ammo is a quantum leap forward, it is somewhat unusual that NO Tier One units, let alone plain green/white SOF units are using it…
”In the end, I carry the FN Five Seven every day for a few reasons. It is extraordinarily light for a full size handgun (probably THE lightest), I shoot it better than any other pistol by a LONG shot, its it very controllable under rapid fire, has never failed me and 20+1 goes on forever in a pistol. In short it inspires confidence that I simply cant get anywhere else.”
Now those are some great reasons for YOU to carry an FN57; it is always a good idea to shoot what is most accurate and reliable for YOU. The one caveat is to make sure you have tested that hypothesis in a demanding training environment, proven over time to offer real world relevance–something like Magpul Dynamics, EAG, Trident Concepts, VTAC, CSAT, Vickers Tactical, Pistoltraining.com, ITTS, TigerSwan, etc…