Kind of hard to predict whether your gun will safely reach this level or not.
Best advice is to get a chronograph, and work your way up with either WW296 or H110 and magnum primers. Hodgdon #26 shows 350 grain JSP, brand not specified, with a starting load of 19.5 gr. of H110 and a max load of H110 of 20.5 grains at 30,000cup. Primers were Winchester Large Pistol. Velocity reported from a 7" test barrel at about 1050fps.
My gut feel is 'probably,' with the long-nosed bullets and the large Redhawk cylinder. But that's just a guess. No doubt you'd be over 30,000cup.
Anyway 50 fps will not make two cents worth of difference, so if you get to 1150fps, for example, and have a super load, don't feel bad quitting there. Recoil could start getting to interfere with follow-up shots.
Best of luck, sounds like a neat combination (if it doesn't pound you to death).