I would have thought the super x would have run for you. I typically run Remington Clay and Field or Fiocchi 3GJM stuff ... Both 7.5s, 1-1/8th doing 1200. I've ran lighter and slower loads in testing. To this day, the Fiocchi 1oz doing 1150 light strikes for some reason but cycles when it does pop. The Gun Club 1-1/8 doing 1145 runs all day Sent from my SM-G975U using Tapatalk