I use them in a reg 243. With imr 3031 and a dose of 37.1 gr i believe......i was getting 3200 fps and keeping it under 1 moa groups at 400 w the best group being under an inch. I still havent messed with seating depths yet. I imagine with the AI version you could prob easily push them to 3400 fps. Mine tube is a criterion 9twist in 26". I like them a lot.

Brian