The formidable .465 H&H designed in 2003 is short enough to fit in a Mauser 98 action by lengthening the mag to 3.525". The 2.9" case, that can be formed from .460 WBY brass, with a Woodleigh 480gr bullet seated to cannelure measures about 3.45" with soft points and with solid, 3.5". The cartridge will launch these bullets at 2375fps for 6012 ft-lbs of energy, at much lower pressures than the Lott.
Kreiger has .468 dia. barrels available in North America.
If I had the skill to build a classic African Hunting Rifle along the lines of the H&H originals it would surely be a desirable addition to any collection.

.465 H&H