Nosler reloading manual guide #7 on page 488 list Retumbo starting at 91.0 than 93.0 max at 95.0. Fps follows 3093,3156,3192 with a 24 inch barrel. All I need is 3150 or 3190 for my dial. I have a 26 inch barrel I'm pretty sure I should be able to get that FPS. Looking forward to those with a 300 Rum report.