450ACKLEY rans some data through "Quickload" for me and here is the results.

Neale,
Ran a few loads for you, went to about 61500 psi, 63400 is listed as maximum.
Used a 25" barrel and a 123 gr Scenar as the bullet for all loads.

AR 2206H - maximum of 37.5 grains for 2935 fps.
AR 2208 - maximum of 38.5 grains for 2911 fps.
AR 2209 - maximum of 44 grains for 2985 fps, but compressed load at 109%.
Reloader 15 - maximum of 38.8 grains for 2954 fps.
Reloader 17 - maximum load of 41.3 grains for 3000 fps.
Winchester 760 - maximum load of 42.8 grains for 3000 fps.