Has anyone tried this powder or run across any data with this powder in the 378 or 416 Weatherby cartridges?

I just bought a one pound jar of it simply because the LGS didn't have much powder to choose from as his stock is very low. I thought I could use it in something I shoot. Can't find much data for it either. I would like to find data for loading the 8x57.
joe

Didn't find 378 or 416 loads but here's an 8x57 load....

http://www.reloadersnest.com/u...CaliberID=78&ID=7252

Thanks wrongtarget. They give a load for the 170 grain bullet for the 8x57. I wonder if that load would work with a 175 grain bullet? I have read that Superformance is a finicky powder. I guess I shouldn't try it.
joe

If it were me, I'd reduce that load by 10% and work up. I'd run it thru QL for ya, but they don't list Superformance powder in the version I have.

Yeah, they probably won't list it for a while. I guess it is just too new.
joe