Sounds like lots of things added up to the result. No offense but we haven’t heard a velocity from your short barrel, and if you are assuming parallax isn’t that important on such a difficult angle then it might be safe to assume “close enough” for level, scope height, MV, BC, range, angle, weather, shooting position, shooting form, etc all added up not not actually close enough.
32* angle is quite steep. Angle compensated range in a LRF does not help as much as it hurt the further you go because it doesn’t give the ballistic solver the real distance the bullet is affected by environmentals. Such a steep angle indicated mountains, what sort of wind were you dealing with? Down draft?
So many things are “best guess” in the field, in my opinion it is so much more important to be extremely accurate with the things you can control or measure accurately. Compounding interest is real.
Bummer it ended the way it did but good motivation to really dial your system in and reevaluate your data quantity from this trip so your next is a great one.