The armour protects against 9mm Full Metal Jacket Round Nose (FMJRN) projectiles, with a weight of 8gm (124gr) at 430 m/s. Full Metal Jacket Round Nose (FMJRN) type DM11A1B2 (DN or MEN) projectiles with a weight of 8gm (124gr) at 415m/s. 44 Magnum jacketed Soft Point (JSP) type Norma 11103/61103 projectiles with a weight of 15.6gm (158gr) at 390 m/s. 44 Magnum Jacketed Hollow Point (JHP) projectiles with a weight of 15.6gm (240gr) at 430 m/s. Eastern European Tokarev LC 7.62 x 25mm steel core projectile with a weight of 5.5gm at 455 m/s.Link (via Shiny Shiny)
This jacket also protects against stabs, cuts, slashes with sharp and blunt edged weapons like hypodermic needles, ice picks, knives and broken bottles up to 25 Joules according PSDB (2003).
I write books. My latest is a YA science fiction novel called Homeland (it's the sequel to Little Brother). More books: Rapture of the Nerds (a novel, with Charlie Stross); With a Little Help (short stories); and The Great Big Beautiful Tomorrow (novella and nonfic). I speak all over the place and I tweet and tumble, too.