I have experienced POI shift before, in tinkering with the OEG concept (Aimpoint with front lens cover closed). The dot was zeroed conventionally; perhaps results would be different if zeroed with the cover shut.
|His Royal Hiney|
With my left eye not 100% from the retinal detachment, I have to close it while shooting or reading.
To address the POI shift at less than 50 yards, how about you bench rest it and see the variances at 3 other ranges besides 50 yards? You can extrapolate how the trajectory shifts between the 4 points and it will give you a better idea of where you'll hit inside of 50 yards.
"It did not really matter what we expected from life, but rather what life expected from us. We needed to stop asking about the meaning of life, and instead to think of ourselves as those who were being questioned by life – daily and hourly. Our answer must consist not in talk and meditation, but in right action and in right conduct. Life ultimately means taking the responsibility to find the right answer to its problems and to fulfill the tasks which it constantly sets for each individual." Viktor Frankl, Man's Search for Meaning, 1946.
Well I just bought the PA 3x Microprism so I will be exploring this as well. My research seems to indicate that the horseshoe portion can be utilized both eyes open as a de facto red dot for up close. Without shooting I don’t know how much parallax will be present.
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