Son, you must be from one of those big cities, and a product of those fancy colleges. They teach all sorts of great theories in the ivory towers, and many of the folks seem to eventually come to believe them, to the exclusion of what exists outside the hallowed halls of academia. Colleges today teach that bears are misunderstood herbivores, that Arabs really love us, that a whistle and car keys are effective tools for a 110 pound female facing a 220 pound rapist, and that a two pound chunk of wood and steel will turn whoever holds it into a drooling homicidal racist maniac. Yup. I've got a great deal of respeck for them colleges today...
Theory don't mean squat when real-world conditions step in. Let's go to the range. Bring your fancy perfect rounds, and I'll load right there, in whatever conditions are present. Bring money. I'm _serious_. Do you have a set, and have your parents given you a large enough allowance, that you can afford this? I've got numerous rifles that will shoot sub-MOA on a 100 yard target. How many have you EVER loaded for? Or are you worried that your airsoft won't make it to a 100 yard target?
"Perfect" equipment doesn't exist. We're not concerned with perfection - we're concerned with remaining within the bounds of imperfection; inside tolerances. When I hear that someone is measuring something to 0.001" I believe 'em, within tolerances. When I hear 0.0001", I'm guessing they're really just trying to get darn close. And when I hear 0.00001", well, either they've got one heckuva climate-controlled facility, with all the nice fancy gear that gets calibrated (in an equally advanced manner...) constantly, or... they're a BS artist. I'm happy with Mr. Starrett and Mr. Mitutoyu. The first stage in science is understanding what does NOT work.
Do you weight sort your brass? What spread? 0.1 grain? Congratulations. Unless you use a lab quality balance, in a sealed room, on a solid table (the general use balances in our labs at work are on tables that are about 6" thick marble...), you're gonna get variations that are due to equipment. Deal with it. Oh, you say you're using your Pact scale, or your Dillon scale, or even your Lee scale (I happen to actually like Lee scales...) to sort your brass? Congratulations. You've entered an 0.1 grain error margin before you even started. How many pieces have you already imperfectly sorted? This is just enough to make you wanna run and slit your wrists, isn't it...?
There's a lot of little bits of knowledge that one gets with 30 years of experience (not to mention various degrees and other academic study, but not everyone feels the need to wander around waving diplomas...). Another one is that a bright shiny young engineer can be a dangerous thing. Education, understanding or skills? Son, I'm not the thick one here... Think for a minute or three...
You do NOT know who you are insulting here.
Again. Bring money, and prove what you say is true in the real world. $100/5 shot group, 100 yards, with a moving backer, and someone else scoring the targets. Most matches we'll shoot 6-10 targets/day.