PE consists of thousands of rounds of range and field condition shots and the D better damn sure be done prior to even leaving to go hunting
Dare I say.... InDeed?
I'm amazed at how little some folks shoot, then think they can consistently hit MOA sized targets at extended ranges. Most of whom, couldn't hit a 1" dot at 100, 5 times out of 5.... from a bench. I've put well over 100 rounds through the new 6.5 this week, and I wouldn't bet on a first round hit on an MOA size target at 300. But, I'd feel more than comfortable on a coyote out to 700+ in good conditions.
Not sure it takes thousands, with the same rig/load/glass/etc.... but rather, simply observing bullets flying through the air, either via trigger time or spot tine. Once you've seen more than a few... it's much easier to extrapolate...
You better pray to the God of Skinny Punks that this wind doesn't pick up......