Barnes #4 .257 Wby 115 TSX

IMR 4831 60.0 gr/3,100 fps - 65.0 gr/3,302 fps
XMR 3100 60.5 gr/3092 - 65.5 gr/3,273
RL 22 60.0 gr/3,063 - 67.0 gr/3,308
IMR 7828SSC 63.0 gr/3,105 - 68.0r/3,298
H1000 66.0 gr/3,073 - 72.0 gr/3,287
Magnum 69.0 gr/3,196 - 74.0 gr/3,383

Note:
My chronograph has never shown velocities very close to any of the Barnes published loads. The Barnes manual is mostly self promotion, not too much real content.