iamdb, that is just not so. Please do not make stuff up.
Only a .45 ACP entered in CDP or a moon clip revolver, typically .45 or 10mm, in ESR must make a power floor of 165,000.
ESP and SSP must do only 125,000 which is easily in the reach of Cheapmart econoball or handbook reloads. USPSA Open 9mm Major is NOT needed for any IDPA Division.