Jake, always sight in at distance on your highest power, at 25 yards if you were on 9x the parallax could have caused the difference in POI, You were dead on at 100, scope height of say 1.5", you should somewhere around 3/8" low at 25 yards. I wouldn't waste the ammo, I'd vice it, put it on target and turn the power selector and watch the crosshairs, its prolly fine I'm going with parralex being the culprit at 25 which without an AO you can't really test, your test would most probably have the same results as your original session, because of how your eyes percieved the the target picture due to excessive parralex. Every long range shot on deer that my students have missed with my rifle has been attributed to improper focus setting, they miss, I get on the rifle, set the focus, they connect the next shot
RR