Ed: Are you sure that wasn't the Xtra-Lite load?
The old Winchester Reloader’s Manual, 15th Edition
https://www.appuntidiricarica.com/pl...rs-Manual-.pdf
Lists the 12g AA Xtra-Lite 1 oz. at 1180 fps - 7,300 & 7,400 psi
Independent testing of Old AACF Xtra-Lite 1 oz. WAAL12 was 8000 psi
The new AAHS Xtra-Lite Target 1 oz. AAL12 was 8,760