alt Hacker NewsThe guy is clearly an obsessive hyper-perfectionist- he's telling (or boasting) of taking a culinary obsession from reproducing fine-dining dishes (when most people are content mastering a few decent recipes) to building automates curing chambers and butchering whole animals. It's kind of obvious that this personality leads from any random objective to into the deepest of the rabbit holes where everything is studied and annotated with the utmost precision. Funny as a clinical case, not sure I'd like to be around someone like this though :)
Point is that sub-millimeter precision when measuring rings is doing absolutely nothing to further his shooting skills to take down a tasty deer. To the contrary. Time is limited, and every minute spent perfecting this automation was not spent improving shooting skills by, you know, shooting. In other words, this may well have made him a worse shooter than he could have been. Nothing wrong with it, but let's call it for what it is.
A perfectionist defines a goal and then finds the perfect path to get there. He was just giving in to distractions and "perfectionist" is the wrong label.