How to turn off reticle bloom in custom games?

Since the TU is out and Anniversary has been shipped, does anyone know how to put on Classic Magnum settings and turn down (or off) reticle bloom?

Those gametype settings aren’t visible to us. To use them, you need to download the Matchmaking gametypes and edit them as desired. You can do this by playing them, and then saving them from the “Temporary History” section of the File Browser.