RE: Does seating depth and crimping affect velocity?
Don't expect to get anywhere close to Noslers velocities w/ the charges they list. Noslers max load of 67.5grs of R-22 gave me an avg. of 3060fps in my 26"M700 and 3020ish in the 24" guns w/ the 140's. I was able to safely shoot 70grs of R-22 behind a 140 Accubond in my gun for 3310fps in 45 degree weather. This may not be safe in your gun so work up slowly. Your velocity sounds just about right. As far as crimping is concerned, I've actually seen slightly higher velocities in crimped 30-06 loads. I think this is because the pressure builds more before the bullet leaves the brass. Hope this helps. Brett