Anyone know the standard operating pressure of the 5.7...being a bottle neck rifle case much like a .221 Fireball it has to be well above most standard handgun cartridges. I've been present when two Glock 9mm went KaBoom but neither caused any damage to the gun or shooter. A friend with a .40 split the frame causing some cuts on his hands. Glock replaced the gun no questions asked. I've blown the webs on 3 Supers over the years but the worst thing that happened was cracked grips panels....
Bob
Some interesting information...
http://en.wikipedia.org/wiki/FN_Five-seven http://www.fivesevenforum.com/archive/index.php_f-11.html http://www.shootingtimes.com/2011/08/31/longgun_reviews_st_fnsfirepower_200811/ 
