By your using something such as the Hornady Ballistic Calculator you CAN start at closer range. With at least a BC, sight height, bullet weight, and velocity you can set a zero range and get very close off the trajectory of your calculator. At least for my rifles and where I zero them, typically you will be hitting low at close range.
You still have to shoot at range to know where you are grouping. Isn't spending time at your zero range the only way to really know what the POI is for the range you are attempting to zero your rifle at?
Last edited by d80hunter; 04-30-2017 at 01:05 PM.