Hornady 150g SST magpro in 270wsm?

[BGD]

I have been looking for load data for the Hornady 150 grain SST and magpro for the 270 WSM. This weekend I shot 64, 65 and 66 grains with magnum primers without any pressure signs. They all shot 1 inch at 100 yards. I am not sure much higher I can go with the powder charge. I can find loads for other bullets but not the 150 g SST.

Anyone have any experience with this combination?

Thanks