WinMSS is the official match scoring program for IPSC sanctioned matches.

Latest version: Version 8.3.8 (February 21, 2023)


What’s New 

Revised the “Pistol Caliber Carbine” discipline to include the provisional “Pistol Caliber Optics” Division.


This release expires on MARCH 31st, 2024. We expire the software to encourage WinMSS end-users to keep their installation current, but you can continue to use the software by changing the computer’s clock to a date prior to its expiry.

WinMSS Installation

Download and execute the WinMSS setup package (approximately 10 MB) by clicking on this link:

System Requirements

Microsoft Windows operating system: Windows XP, or newer.
Approximately 40 MB hard disk space
Mouse or other pointing device.


Contact Us

Please feel free to contact us at: with your concerns, comments, and/or issues at any time.