I don't think many of the suggestions above have a 24" tube, save for the Faux and the Weatherby?
It's odd to me this doesn't seem to exist. It seems like the perfect combination for a 260 rem/6.5 Creedmore. Maybe most folks don't mind losing 100-200fps?
And I highly doubt an extra 2" of barrel on a 260 or 6.5 Creed will add 100-200fps to the velocities realized by a 22" barrel. 100fps would be pushing it, as these are fairly efficient chamberings.