300 Dakota with H50bmg powder

[oldreliable45120]

I have a custom 300 Dakota Tactical rifle. When I first started reloading for it I was told to use 300 Weatherby max data and work up to 300 RUM start data as a max. I e-mailed Hogdon and they never had Dakota round to work up info on.
In the hogdon manual they list 96gr H50 with a 200gr bullet as a start load. Can I reduse this load and use this powder? I normaly shoot a 208 A-max, if this helps. Thanks for any help.

 

[CJ6]

Hornady #7 lists these powders for the 300DAK. with 190gr-220gr bullets, 190gr BTSP bullets IMR 7828 min 66.9 ,max 74.6, AA 3100 68.6 - 74.0, H 4831 69.9-75.8, VV 165 69.3 - 76.1, WMR 70.6 - 78.9, RL 25 72.9 - 81.5, H 1000 71.7 - 81.6, 220RN, H 4831 57.9 - 64.7, RL 22 63.3 - 75.6, AA3100 63.6 - 72.7, IMR 7828 63.7 - 72.9, H 4831 64.1 - 73.7, VV 165 63.0 - 74.3, WMR 65.5 - 74.5, RL 25 70.1 - 79.6.