Sirs, there is a difference between a much older WW11 action and a new comercial action. Some of the powder companies even quote it that way ,Allient. Every gun is a little different. As far as killing power the mid range loads probably are just as good as the max. loads. The only difference to me is the flatter trajectory. By the way nobody is right or wrong here, thats why we reload so we can do it our way. Buckfever`