.400 H&H Magnum

The .400 H&H Magnum also known as the .400 Holland & Holland Belted Rimless or the .400 Holland & Holland Magnum is a .411 caliber belted rimless bottlenecked cartridge introduced in 2003 by Holland & Holland together with the .465 H&H Magnum in 2003. It is based on the .375 H&H Magnum case.

.400 H&H Magnum

The .400 H&H Magnum also known as the .400 Holland & Holland Belted Rimless or the .400 Holland & Holland Magnum is a .411 caliber belted rimless bottlenecked cartridge introduced in 2003 by Holland & Holland together with the .465 H&H Magnum in 2003. It is based on the .375 H&H Magnum case.