You will not find anything on it as far as caliber. Even the FBI report does not mention the caliber or weapon used. At the time the Lorens County Sheriffs Department issued Glock 22's in 40 caliber and in 2000 they went to Glock 45's. Tragedy, I don't care what pistol was used or caliber, there have been many, many, instances of bad guys taking multiple torso hits with either 9mm, 40, or 45's and kept going, as well as many, many, one shot stops with either 9mm, 40, or 45's. I perceive bullet failure and shot placement were probably main factors as well as a crazy combat veteran armed with a 30 cal carbine.