Apparently it lead to alot of changes at the FBI and eventually likely led to the 40 S&W.
It also led to the Hornady XTP.
how is the XTP any different than a regular hollow point pistol bullet??
The very lengthy report on the requirements the FBI placed on the new bullet and Hornady's response in developing the XTP at their behest is a good read. If you take the time to read it you will likely be packing XTP's in your defense gun afterwards.
I do. I hand load my own 124 gr XTP's for my 9mm CCW handgun. 16 rounds on board, and 30 more in the mag pouch. Things might have worked out a little differently had those guys been packing similarly.
It was a terrible incident, but as has been noted here already, many lessons learned there have saved lives since. Some very heroic action took place that day.