Take a look at the autumn 14 issue of the DGJ p.15 The Westley Richards ad pictures a bolt action that didn't look quite right to me. It took me a little while to realize the front sight is mounted with the ramp towards the muzzle. That looks odd and does not seem logical.

But I note that Dakota Arms mounts island rear site bases with the ramp towards the muzzle. I also recall some photos of Jerry Fisher in his shop with a rifle he was working on (taken by SDH and posted on this site) that also had an island rear sight base oriented with the ramp towards the muzzle. Why orient ramps towards the muzzle? Why not orient the ramps towards the action?