Better yet would the 38-56 ackley improved, .375/348 ackley improved, .375/350 Rem Mag in a factory offering. These cartridges come very close to the .375 holland and holland for horsepower. I think that Marlin, Winchester and Browning have been missing the mark for years by chambering cartridges in sizes that tend not to appeal to consumers. Their only attempt, the .375 Winchester was just a high pressure standardized .38-55 which raised few if any eyebrows. Now bring out a .375 cal in a cartridge that will push a 270 grain in the 2500+ fps range and you'd see sales of the fabled .45/70 drop in favour of the new offering but what do I know.