Dave at Work,

Yes-they only difference is that using a magnified objective i.e 9x scope-you allow yourself to be more precise in your shots--and it will be more obvious if you encounter any poi changes from range session to range session. At 100 yds, it is just pretty darn tough to have the same precision as with a scope.

My concern is past 100yds-at this close range ang shift in POI will still result in a dead deer. The reason for getting the Nikon BDC, is so I can hunt deer in open handhills and plains-then ranges up to 250 make me worry a little more about shifting POI's