When looking at a worksheet at any zoom factor other than 100%, copy-pasting an embedded chart multiplies the original chart size by this zoom factor. Since I prefer to work with zoom factor 75%, pasted charts always get smaller than their original copy. Thus, the only way I know to obtain pasted copies at the original size is by first switching to zoom factor 100%. This is most likely a bug of Excel but if any of you knows a way to correct this counterintuitive behavior, please let me know. Thanx!
(I'm using Excel 2003.)