Raising the scope has the effect of moving the peak of the trajectory further down range. I sight in at the peak of the trajectory so all corrections are hold over. Sighted in like this a high scope makes for more hold over on the close targets and less on the far targets. Some like this because it is easier to range the near targets. Personally I prefer to put the scope at the height the stock calls for (like you).
Charter member of Over The Hill Gang