Correct me if I'm wrong but like a lower pressure 416 Rigby the Lott can be run similarly so that the 500 gr runs at 2150-2200 at Rigby pressures instead of the max 2300+fps at 416 Remington pressures.The 458 WM has to be run at 416 Remington Mag pressures to get 2150+. We have previous threads where 416 Rems froze up in the heat of Zim and similar articles in African Hunter Magazine.

The 470 NE is an institution at 2150fps on DG and I would love to have a low pressure bolt round(well maybe not THAT low pressure) going the same velocity.If I have to run a 458WM at 416 Remington pressures to do 2150+, I don't want that in Africa. I want a 458 Lott at 416 Rigby pressures(less pressure)and 2150fps velocity(? a better mousetrap).Don't want to take a chance on the big gun freezing up in 130 degree weather with DG charging!!!

Cartridge Pressures can rise substantially with temperature. Ever had one freeze up in the chamber?? You can carry a hot rod 458 WM but I would carry a downloaded 458 Lott every time if no Double were available!!