Re: figure this out!
One of two things come to mind.
1: Tequila was involved.
2: You were shooting at the south pole where gravity has reverse effects from the northern hemisphere.
Long range shooting is a process that ends with a result. Once you start to focus on the result (how bad your last shot was, how big the group is going to be, what your buck will score, what your match score is, what place you are in...) then you loose the capacity to focus on the process.