I burned a lot of pwder when I got my 257 Roy in a Mark 5 years ago . Then a friend said a guy at the wby factory told him he should use 7828 . I tried it and it puts 120 gr NP's in the blck and real quick .
When I come by a No. One in 270 wby [ bought it for a donor ] I put 75 gr of IMR 7828 behind a 130 xxx which were the only 270 bullets I had and it produced a nice tight little group at an an average of 3415fps with ES of 40 . Thats for 3 shots .
I invested in a real good set trigger , put an AV Swaro on it and it is my main rifle. [ I still have a neat custom 7 mag barrel for a NO. one if anybody is interested!]
