I don't doubt Hornady makes those claims. Whether any loading but a single factory load can repeat those results is another matter entirely.
For all practical purposes, you will probably end up with a rifle that only hold an advantage to a 20" '06 in that it is 1/2" shorter OAL. Disadvantages being an obsolete chambering that nobody else wants when you or your kids want to get rid of it.
If you want a Ruger, find one of the ultralight '06's
The whole premise of a 20" ruger is a joke. The action is heavy and made out of a crudely cast block of steel. As such the gun will handle about as well as a 4x4.
