what works for me my not work for your barrel. I have a 2023 and a 2024 Both are .25 caliber. regulator on 17. Turn up power wheel till you get between 950 to 990 per second With NSA 38.5 grain .254’s. One of mine I am running just shy of 1000 ft./s and the other one I’m running at 975 ft./s...