Someburro,
You are correct in saying it's not the rifle. Really, It's not JUST the rifle. To make those kinds of shots consistantly, there are a lot of ingredients in the recipe. I think that a "factory" gun could make that shot as long as it had the right ingredients, i.e. trigger-pull adjustments, optics, ammo reloaded specifically for that rifle, practice, practice, practice, and a clean barrel. A person making that shot should never say that it was luck, if he/she does then they took an unethical shot. Conditions have to be perfect and the squeeze has to be even more perfect.
I hunted with a friend this year in Mexico who shot a buck at 711 yards. From the time the deer was glassed to the time he was shot through both front shoulders was under One minute (that was as amazing as the distance of the shot). For somebody to say that we didn't "hunt" that deer would have to walk the 8+ miles we did that day and glass your balls off like we did. Sometimes terain doesn't allow a hunter to get closer like it was in our case. The conditions were right, we new the exact yardage, we knew exactly what his bullet did at that yardage, there was no obstruction between us and the buck, and he made a phenominal squeeze. He told me where he was going to hit it before he shot. Not a cocky thing, but a confident thing. Not for one second did I doubt him or his rifle, nor did I think he was taking a lucky shot.
Got way off on a tangent, but those of us who are into this looooong range shooting can get pretty extreme, and I'm definitely a believer. That is just my two cents. Chris Jacob