I use 7828SSC in the 257 and 300 Weatherby calibers with TSX bullets. Great accuracy. Load to the top of the range, set to book max, and you're already very close to the perfect load.

It doesn't work as well in the 6.5-300 Weatherby, where US869 works for me.

"Think about how stupid the average person is, and then think that half of the people are stupider than that" - George Carlin