The .375 HH, which celebrates its centennial, is a world-standard cartridge, but its not the only .375. Not counting wildcats and proprietary cartridges, we have: .376 Steyr, .375 Flanged, .375 HH, .375 Ruger, .375 Magnum, .375 Remington Ultra Magnum and .378 Weatherby Magnum.Performance is superb across the board, but there are differences in ranging capabilities, energy yield, recoil and action size the various .375 cartridges can be housed in. If youre looking to get a .375 you need to decide what meets your requirementsand the recoil you are willing to absorb to answer that need. I separate the current crop of .375 cartridges into slow, medium, and fast categories.