I do not have a link to the info, but this stuff is significantly higher pressure than even the 127gr +P+ Ranger stuff. The BATF had a warning out on this stuff, and someone can probably link you to it. Try a google ssearch with BATF and L7A1. It was intended for use in Sterling SMG's in Arctic conditons and is NOT reccomended for use in 9mm pistols, even the Glocks.
I have heard of folks running this in Glocks, but I wouldn't chance it.
ETA what I could find with a short Google search: Hirtenberger AG WARNING: Austrian ammunition maker Hirtenberger AG has put the word out concerning a quantity of its 9x19 mm ammunition that is "unique for use in any handgun." According to a November 7, 2003 BATF Industry News release. "This ammunition was loaded to produce pressures far in excess of that intended for use in handguns. This ammunition should not be fired in any weapon other than what it was designed for." The ammunition was produced for the British Ministry of Defense from 1990 through 1992 for use in the L7A1 "under adverse conditions" and carries the "L7A1" designation, as well as submachine guns or the semi automatic versions of such weapons. The ammunition covered by this warning can be identified by the following head stamps: 12 o’clock position: "HP" 3 o’clock position: "90, 91, or 92" 6 o’clock position: "L7A1" 9 o’clock position: "a cross within a circle (NATO cross Å). (Information from the International Ammunition Association, Inc.)