ISBN: | 978-5-5089-4120-8 |
High Quality Content by WIKIPEDIA articles! The .375 Holland & Holland Magnum is a medium-bore rifle cartridge. The .375 H&H was only the second cartridge ever to feature a belt, now common among magnum rounds. The belt is for headspace, due to the narrow shoulder. The belt replaced the rim in function on these new rimless cartridges.