Re: POI of two different loads
POI shifting up exactly vertical is obviously a good thing. Sometimes my POI will shift left or right as well as vertical.
If they both shoot good groups then keep em, the rest is a mental exercise. That is something I enjoy.
Velocity explains some of it, barrel whip/vibration/harmonics the other part. Look up Optimal Barrel Timing, get your QuickLoad data and see if they are both on an OBT node.
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