Once again, thank you Mehul. This is a Rigby built in 1908 using a 1906 Mauser square bridge stepped ring magnum action with slanted magazine designed special for Rigby's 400/350 flanged round. This round was the predecessor to the famous Rigby 350 Magnum. The rifle is all original and matching. I believe the stock was also made by Mauser because it is stamped with both Mauser and Rigby serial numbers. Enjoy.