I am reminded of a section in African Rifles & Cartridges where one of Taylor's hunting companions loved the 8x57 Mauser and the .450-400 and invariably carried one cartridge of each in his pocket. No doubt the 8x57 was with the 227 grain bullet.

You might consider keeping the rifle, particularly if the auction house is willing to reimburse some part of the price.

The 8x57 with 227 grain bullet is a big game rifle in my view, but of course not a big bore rifle.

Of course if it is out of line with the theme of your collection, that is a deal breaker.