As always, my maximum range is the range at which I can put 10/10 shots in the 8” circle from a given position under field conditions with that rifle and ammo. The target ultimately determines what controllable factors need more work.
All I'm saying is the ammo can decide for you too. I was shooting at 500 meters with this ammo and was having multiple "misses" high and low with the same dope. Then I switched to different ammo with a much better "lower" ES...what do ya know...my hit percentages increased substantially.
So not choosing a better (more consistent) ammo would limit my range to engage - not necessarily my shooting ability.