Thread: Assessing resulting vertical spread from ES (or SD) for your load at distance

Hi puffin, I really hadn't thought about this but it is true !

A better way to explore it would be to model a horizontal launch by setting the sight height to approx your own and specify a "zero offset" of exactly the same,using a short range . I'd use a zero range of 10m not sure why, dont trust percentage rounding errors which could get out of control at micro ranges orders of magnitude less than your working range eg drop difference over the ES could be like a mini fraction of a millimetre and just rounded out.

The answer Is Brian Litz Applied Ballistics Analytics program which will simulate hundreds or thousands of shots at working ranges using your specified ES (actually you input the sd). You do need a windows machine and it costs about $200 . In his book accuracy and precision he models the relative benefits of improving ES in several scenarios. He doesn't discuss the error you explained here when using standard ballistic trajectory programs but he must have dealt with it to get the analyses he wanted.