Again, you misunderstood what I was saying.
My point was that you need to master the fundamentals of marksmanship before you will get any real benefit from shooting longer ranges in the field. It doesn't have to be at a CFO approved range, but controlled conditions are important.
Actually, controlled conditions are important to learning the basic accuracy fundamentals at all ranges with any rifle.
Then, get away from controlled conditions and learn to shoot the real conditions of the area you are hunting in. Wind, rain, sunlight, cloud cover, rate of twist effect on bullet path over all of the ranges to be shot, bullet drop etc. All are extremely important. Especially the further you reach out.
Let us not forget simple things either, like fore end rest, cant etc. What looks good at 100 yards, just isn't good enough at 500 yards etc.
As was mentioned before, if you want to shoot extended ranges, it really isn't all that difficult. It just requires lots and lots of practice on and off the range. The best glass you can afford and the best range finder you can afford.
You can use the ranging tables for bullet drop and wind drift in the books as a reference but don't take them as gospel. Most of those are computer projections and don't take real ranging conditions into account. That only comes with experience, like learning how a tree or bush or grass leans with the wind and being able to judge bullet drift from such observations. Good glassing practice also makes you aware of wind changing direction a couple of hundred yards past your shooting position. Then there is that darned mirage effect that can happen at any temperature at any range.
It's all about getting out there and learning to read conditions, then figure out how to shoot those conditions. Personally, I have issues judging wind effects and direct sunlight effects over open ground. I usually take a long time to make such a shot, preferring to wait for calmer or less dynamic conditions.