loading data needed

[Chaneylake]

I have about 7 pounds of SR 4756 powder, it have been on the shelf for many years

anyways I do not have a loading manual that will show loading data for 20 ga 7/8 ounce load, win AA hulls, winchester primer, win AA 20 wad

wanting 1200 fps,

does anyone have a manual that will give me this data

 

[Deer Assassin]

id email IMR

 

[Chaneylake]

will do, thanks for the tip