.450 Marlin
…the .450 Marlin was not developed from the .45-70. Rather, the .450 Marlin was developed from the wildcat .458×2-inch American, which was based on the .458 Winchester Magnum. This places the .450 Marlin in the .458 Winchester family of cartridges, though it is more easily understood as a "modernized" .45-70. It is possible…