As others have suggested, the .400 3inch NE would definitely be one. I already have mine, a Jeffery double that fits me perfectly, and will be the rifle I still own when they finally put me in the ground.

The lighter could be anything from a 6.5 Mannlicher to a .350 Rigby bolt-rifle. How 'bout a Westley Richards .318? Or a Lee Speed? Or....

You will gather that like many here, I value the experience of stalking with a vintage classic over sniping with a modern wonder-gun.