In the 708 with 150gr. bullets H4350 and StaBall aren't even close in max. load or vel.

Manufacturer Powder Bullet Diam.
C.O.L. Grs.
Vel. (ft/s)
Pressure
Grs.
Vel. (ft/s)
Pressure
Winchester StaBALL 6.5 .284" 2.800" 43.6 2,628 43,100 PSI 48.5 2,908 58,900 PSI
Hodgdon H4350 .284" 2.800" 42.0 2,549 40,600 CUP 45.4 2,724 51,500 CUP

It's a great life if you don't weaken..