I have used 32.5 grains of 3031 under many different 150 grain bullets and consistantly getting around 2250 fps from my 20 inch barrel. I have also used the 170 gr. hornady many times on top of 30.0 grs. of the same powder. If I up the charges with either bullet as little as one grain groups open up a lot.

Dog I rescued in January

[Linked Image from i.postimg.cc]