In my opinion, you do load differently! Slight differences in velocity at 100 to 300 yards (at least 100 to 200) are not usually visible on the target. An article in PS by the late (personal friend) Geza Nagy showed this when he and Bert Rypkema (another friend and excellent score shooter) fired numerous shots while upping the powder charge a click at a time. It took him about 6 to 8 clicks IIRC before you could see the group start to elongate vertically by ever so much. This was on an extremely accurate bench gun with a proven Pac-Nor barrel.
On the other hand, my experience has showed that these differences in velocity at 600 to 1,000 yards (and beyond) will cause all sorts of havoc on your vertical spread.
So, case prep is critical in getting the internal volume fairly equal. Neck tension wants to be the same. Powder wants to be weighted to a tenth or under/grain. I could go on with all the little details that contribute to making each round like the next, but you should get the picture. In short range BR, I almost never annealed case necks. In long range I anneal just about every loading. In short range, almost no one uses a powder measure........they just change the "clicks" on their "culver style" measure. Not so in the long range game. Seperating bullets by base to ojive is about unheard of in the short range game. So yes, I believe loading procedures differ from the short range to long range game.
Again, this is just my perspective on it?
Rich De