.500/450 Nitro Express

Based on the old black-powder .500/450, the .500/450 Magnum Nitro Express was introduced by Holland & Holland for their single shot and double rifles during the late 1890s. It fires a .458 in 480 gr projectile at over 2100 ft/s to generate in excess of 5000 ft.lbf of muzzle energy.

Performance
Ballistic performance of the .500/450 NE is very similar to the .450 Nitro Express cartridge. Like other .458 caliber British hunting cartridges, it has low pressure making it a good choice for any hot climate.