Re: 30-.06 zero
It depends quite a bit as others have said load, gun, actual muzzle velocity, and elevation etc. but for my deer load (Fed 150gr BTSP) out of my 06' that would put it at about a 375yd zero and almost 6" high at 100 yards, and 8" high at 200 yards.
To me that's beyond what is reasonable for using a longer than 100 yard zero because at 200 yards you are high enough you are outside the kill zone aside for all but the largest game.
You'd be much better off IMO with about 2" high at 50, which is about a 300 yard zero, and at 200 you are only about 5" high.
Just to show how much it varies going to a 180gr sirocco that 3" high would be a 350 yard zero (not a huge diff) but it puts you 9" high at 200 yards, again not massive but that's even pushing the kill zone of a large elk if you hold dead on. Add in some other factors such as elevation, temp etc. and it can be significant.
Also never trust the calculators if you don't have real verified numbers with a chrono etc. even then best to shoot it and see where it's really hitting. A lot of times with good numbers the calcs are pretty close but I've seen them way off too.