There is a bit of a mystery here. The Rigby was purportedly presented to Corbett in 1908. Corbett purchased a Westley Richards .275 at Manton's in Calcutta in 1910. He used that rifle in his attempt to shoot the "Temple Tiger" that same year. He wasn't successful his first attempt because he was unfamiliar with the Westley's two-stage trigger.

Perhaps the Rigby had a single-stage trigger, or Corbett never used the rifle. Apparently he would examine a rifle and never test the trigger! I don't see how that could be, but the evidence is clear. The Westley must have been a superb rifle for him to purchase it whilst having a presentation Rigby back in his gun room.

Another possibility is that the Rigby was actually presented sometime later than 1908. Maybe after 1910?