The first thing we need to establish is are you going to feed from the magazine or load singularly?
Super accurate base to ogive measurement really only comes into its own when you require a precise bullet jam length, in other words the distance from the bullet to the rifling.

This is usually the domain of those looking for absolutely accuracy, who load rounds singularly and are looking for an exact amount of engagement into or awy from the rifling.
If you are feeding from the magazine then you only need to concern yourself with the COAL, making sure all cartridges are the same length from the base to the tip, espacially if you are seating to the max length that will load into the magazine.

However the trade off here is that due to varying bullet lengths the cartridge base to bullet ogive measurement may be different for each round in the mag, detrimental to ultimate accuracy.
The best way in my opinion is to seat bullets to a working depth for feeding out of the magazine with the critical dimension being that of the base to the ogive, for this you will need to get yourself a bullet comparator

TB.