Just had a play with the chrono,
rws hobby, 396.82 ft/s 2.45 ft lbs
7.0 grains 391.38 ft/s 2.38 ft lbs
389.4 ft/s 2.36 ft lbs

rws superdome, 359.58 ft/s 2.38 ft lbs
8.3 grains 360.68 ft/s 2.39 ft lbs
362.31 ft/s 2.41 ft lbs

napier power target, 364.63 ft/s 2.45 ft lbs
7.69 grains 362.64 ft/s 2.42 ft lbs
362.31 ft/s 2.42 ft lbs