I never understood the pie plate analogy..when I think of a pie plate, I think of the last piece of pie that was on that plate and then I go looking for a piece of pie.
Seriously, I concur with those who stress that only the first arrow counts when it comes to confidence in your hunting accuracy. My targets have no circles, only blotches and light areas where the cover is falling apart on the bag or dark/light spots on stumps and logs, and I try to avoid thinking about yardage as a number. My "adequate for deer hunting" requirement is confidence that my arrow will hit within 3 inches of whatever point I'm aiming at from whatever distance, stance, elevation, etc. I happen to be taking that shot from. My "adequate for turkey hunting" requirement is within one inch. I have different levels of confidence in that first arrow with different bows.
I learned archery mostly from my father. In his day he was mediocre on an indoor range, better on a field range, unbelievably deadly on deer. He believed that raising your arm straight out, or worse above shoulder level, to draw your hunting bow would spook a lot of deer, so he practiced and drew while raising his bow from waist height and released the moment he hit full draw. He is naturally athletic and still has a great sense of distance, lead, and excelled at many sports. Once, as a driver in a supervised cull on a military installation with high fences, he killed 8 deer in one morning with a 57# 1958 Kodiak...he had confidence in his hunting accuracy. In 40 years of hunting with him, there was only one deer we couldn't find ..a shoulder hit that we tracked 2 miles to a river we couldn't cross.