Any thoughts on this rifle?

Johann Peterlongo, Innsbruck Austria, 20 inch octagon to round barrel with integral top rib full-length stock, engraving, DST, open 100, 200 and 300 yards sights, quick detach see through scope mount with a Karl Kahles no. 1 reticle 4 Power Scope, clear optics, Caliber 280 Remington (re-chambered? I don't know the rifle's history.)