To the OP. I note that you are from Gibbons, AB, a nice friendly place that I used to know quite well. I did a lot of gopher shooting in the area 16-20 yrs ago and made a lot of contacts with the local farmers in the process. They were very appreciative to have someone thin then little boogers out, to the point where I had them offering to buy ammo and delivering cold beer to us during an evening shoot. Although I did my deer hunting elsewhere, there were a lot of deer around and there was ample cover as well. I didn't think that there would have been a need to try extraordinarily long distance shots to get a deer and I don't think that getting landowner permission for deer hunting would have been a problem, especially if the farmers were approached a few months before hunting season rather than in the heat of the moment.
Deer are smart to the truck hunters and long distance strafers so they will stay in cover and only emerge to feed after last light. They will be on their feet before that time and start moving to the edge of cover where they will hold until the road warriors are gone and legal light is past. You can beat them at this by getting into cover and intercepting them on the way to the edges. This means learning their movement patterns, hunting the wind, sitting still and watching the heavily used trails to the feeding areas. There are many short range shot opportunities within and around cover while there is still legal light.
If you are interested I have a shooting friend in Gibbons who has done more hunting, shooting, gunsmithing, wildcat cartridge development and reloading in his time than half of the people on this forum put together. He also has a pretty good idea of just what the deer hunting possibilities are in the Gibbons/Sturgeon Valley areas. If he is still active I'm sure that he would be happy to give you the benefit of his experience. Feel free to PM me on this if you like. The "bull" on a deer, even a mature Whitetail buck, is only about 10 inches wide and 14 inches high. That's a mighty small target to hope to hit reliably @ 600 yds in a hunting situation given the variables of uncertain distance, wind, improvised shooting positions, moving or stationary target, and the excitement of the moment.