Little late to the thread but years ago I bought a left-hand Browning A-Bolt Stainless Stalker in .280 Rem. I am right handed but left eye dominant and had always wanted a .280 bolt action. Awesome deer rifle.
From the Browning website it appears as though that particular model is no longer available in .280 but they do still offer a couple models of the X-Bolt in .280 in a left-hand version.