Well yeah, but part of the sales pitch is the simplicity of using the Zeiss calculator and the power ring to adjust rapidly for a change in load parameters. ie: I got 220 gr roundnoses in my left pocket for which I turn the power ring to 6.5x for example, and 165 boat tails in my right pocket for which I move the power ring to 8x (just an example) I guess I'm just ranting about "new and improved, because how often do we really need this feature? But, yes you're right, the scope is still useable with old fashioned calculations.
