The Barnes manual lists the load of 59.5grs of Rel 19 with a 130gr TSX at 3211 fps out of a 24" Bbl. I am using this same load of powder with the Barnes 129gr LRX in my 24" bbl . . Since the LRX has a longer boat tail & a longer nose it has less of the bullet body ( shorter ) in contact with the rifling than the 130gr TSX, therefore less friction . This means a higher velocity. Before I accidentally shot my old chrono it gave a reading very close to Barnes manual with a 58.5 gr load of Rel 19. All things considered I feel my current chrono reading to be accurate. My trajectory out to my 200 & 300 yd target corresponds almost exactly to the Barnes trajectory chart based on a BC of .469. I have also compared velocities with my new chrono with velocities recorded with my old chrono with two other rifles. Velocities with my new chrono are right in line with what I recorded with my old chrono. See no reason to dispute my current readings.
