The answer you need is this.
All this about 'into' or 'just off' the lands is hogwash!
Most, if not ALL hunting bullets work best when there is a 'jump' of between .015"-.100", and quite a lot more in Weatherby rifles. (Which doesn't affect accuracy in these rifles).
The most user friendly method of determining COL for YOUR RIFLE is to place the EXACT bullet you intend on using in the chamber, muzzle down at first, place a pen or other object in behind the bullet and hold it in place.
Then, with your cleaning rod, make sure it has a flat end/attachment, put it in the barrel from the muzzle, without dislodging the bullet, place a mark flush with the crown with a fine felt tipped pen on your rod.
Remove the rod, and then the bullet, replace the bolt in your rifle and close it, insert the cleaning rod again to touch the bolt face and mark the rod again as before. This normally takes a couple of minutes to perform.
Using a vernier, measure from the OUTSIDE of your first mark to the INSIDE of your second mark, this is the MAXIMUM COL for that particular bullet, you can then use this measurement to set your dies
to place the bullet back .015", .020", ,025" etc from the lands. You will also need to check if this measurement is compatible with your magazine length, if not, follow my procedure below.
You will have to do this with ALL different bullet styles you will use.
In most cases you will need to find the measurement that your rifle likes, and remember, if you load past what your magazine will handle, all you have is a single shot.
My method is to load to within .010" of magazine length, and work backwards in .010" increments until I find the sweet spot, there is no use loading longer than the rifles magazine will allow unless the rifle is used for varmint/target work, where single loading isn't important in taking shots at game.