I just went out today to try out 2400 for the first time. 158 Mid States cast bullet over 14.0 is 1404 fps, 14.5 is 1340 fps and 15.0 was 1490 fps in a 6 inch Ruger GP100. The 14.0 was the most accurate of the 3, other 2 started getting bigger. 14 at 40 yards was about 2 inch group, 14.5 was around 3/12 and 15 near 4 1/2 inch group.