Not sure what the book max is with that powder but you could go up slowly at .5 grs of powder at a time and see what happens. You may tighten the groups more.
I had a load of 51.5grs of 2209 with the 140 gr Noslar BT which Chrono at 2870 fps.
So long as your pressure signs are good and no sticky bolt you should be right, first sign of pressure back off up to a grain of powder.
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