A bit of hunting philosophy:
It sounds like you have the run of this location, your stand already fixed, and there is no pressure or competition.
So if you just want an efficient kill, go out with colored tape and a rangefinder, put distance markers on trees or bushes, use a high-velocity flat-shooting caliber like 7mm Rem Mag or 300 Win Mag, put big optics on the rifle, practice and be ready for a clean kill at maximum distance.
However, someone like me would ask, where’s the fun in that? I’ve done most of my deer hunting with open sights, a .30-30 Winchester and some .45-70 Sharps replicas, and finally with a little .243 H&R single-shot on which I had to mount a cheapy Bushnell non-magnifying red dot sight because the eyes weren’t doing their thing so well anymore.
My longest shot was maybe 120 yards, usually a lot less. I just never enjoyed the idea of throwing a bullet at some brown dot only discernible through high-magnification optics.
If I were you, i would not spend much time setting up a fancy sniper rifle. Get some standard multi-purpose caliber like a .308 and a rifle you can handle and hit with. I’d spent some time on that land figuring where the deer usually come out. If that’s too far from that stand, there’s no law saying you have to stay in it.
But that’s just my take, worth every penny
