I just got a sample pack of cast pellets from Mr. Hollowpoint, AKA Robert Vogel (http://www.mrhollowpoint.com/), to try in my new RAW HMx .357 (130 ft# regulated): https://www.rapidairweapons.com/xcart/product.php?productid=17762. They are all of extremely high quality and gorgeous, actually. They are all flat on the bottom; they are bullets, really. I'm wondering how this will affect velocity and flight (if at all) in my air rifle, compared to traditional hollow-based pellets.