Today I fired several rounds with the 6.5SLR. The barrel is 26" long and has an 8" twist. It has about the same capacity of a .264 Win Mag. I started with 62.0 grains of WW2 H4831 and stopped at 67.5 grains. All loads worked through the small Weatherby Mark V action easily. I stopped at 67.5 grains because 67.0 and 67.5 gave almost the same reading. The velocities follow.
62.0 -----
62.5 - 3,196
63.0 - 3,227
63.5 - 3,257
64.0 - 3,267
64.5 - 3,282
65.0 - 3,278
65.5 - 3,313
66.0 - 3,333
66.5 - 3,359
67.0 - 3,403
67.5 - 3,401
