I believe that GS Thunder was leased to ABS for a few years, as I know of several herds in Canada that used him. Several of his sons topped bull performance tests here in Canada, and he was also used heavily in the NDSU Shorthorn herd. I remember seeing several Thunder offspring in the NDSU herd a few years ago. I also think that his Milk EPD ( -11) is wrong, as his daughters seemed to milk pretty good there.
Thunder may have seen much more use had he arrived in another era. He appeared near the end of the frame score era, and because he was more moderate, never received the recognition he deserved. The Thunder calves I have seen have been pretty thick and stylish. I think this is another bull from the past that could be very usuable today. The Sumption herd in South Dakota was a pretty powerful set of females. They were one of the first I know of, to specialize in the production of club calves. I saw this herd many years ago, and remember being very impressed with the thickness and fleshing ability they had bred into their cattle.