I have read his books also and cant find where he seems to kill any tigers or leopards with that particular .275 Rigby rifle, and have also come across the same references to buying a Westley Richards for himself. So he obviously had two .275's. (Although he might have sold the WR once he got the Rigby perhaps. But that was early on - 1909?)

Unlike Bell who shot approx 800 elephants with his .275 rifles, Corbett, who is also "well known" for taking maneating tigers and leopards with the .275, has not written about doing that with a .275 hardly at all.

He does mention later in life, where he is gifting the rifle for posterity (to his publisher?) in his retirement, that the rifle had been used on several maneaters. Is it a fact that Jim Corbett killed many other man eating tigers or leopards with his .275 rifle that he did not write about?

Offhand I can only think of one time that he killed a maneater with a .275 rifle. The incident when he fired one handed.

What did he use to kill the leopard of Rudraprayaag? Was it a .275?