Does horn drill check accuracy buffs in gen 8?

Question

vice versa for evasion drops

Answer 1

This chance of hitting is not an accuracy: it is not affected by accuracy and evasion stats, nor is it affected by other accuracy modifiers such as Gravity, Wide Lens, and Compound Eyes.

Source

The only change that took place in OHKO moves in Gen 8 was its interaction with Dynamax so that means this also stays the same as in previous gen mechanics with accuracy/evasion.

Hope this helps!