Andy,

Handloads.com lists some Special loads with a 300 grain bullet. Depending on your courage, you might work something from there. Keep us informed. You see, I have a bunch of those bullets too as well as a 696 and all my 44 magnums have moved out. If you survive, I'll give it a try, although I must add that recoil was brutal with those bullets in a Superblackhawk.

Ed