If you are saying someone "gave" you that figure, it is not accurate for your gun.
That is off their gun, you need to get the measurement off your guns info.
Sounds like you do not have the instruction sheet, go to the Hornady site and download it. Look in the sinclair catalog for it also. www.sinclairintl.com
and on their site they have it posted and other ways to measure the info you need.
Base to ogive is normally from the base of the bullet to where the comparator you must have hits the bullet ogive. Generally speaking the transition point from tapered to cylindrical on the bullet. Not quite but close enough to visulize. the ogive is where the bullet meets the rifling IF it was seated long and shoved in the chamber.
Base to tip is the length of the bullet overall. That will be needed for Cartidge OAL or COAL to tell you how long a bullet and case can be to be in the magazine of the gun.
Key to getting proper measurements and using them long term is to keep the same bullet for use time after time. I keep mine in little plastic tubes with labels saying which bullet and gun they go to.
Bullets will vary from base to ogive within a box of 100. We have seen variances of up to .013 but anything under .003 consistently is very good.
Here is a simple way to see this. Take a sized case and mill a slot in the neck almost to bottom of the neck with a dremel tool or fine metal saw. Seat a bullet in the case very long. take a black magic marker and coat the bullet sticking out of the case. chamber the round, it will go in hard and then slowly pull the cartridge out. Now take a magnifying glass and look for "marks" on the bullet. That is where the ogive is . If you try to measure the length of the marks you will find that they are from .030-.050 normally. That means you are "jammed" into the lands at least that far in order to leave a mark.
Quite a few guys use that method also and just back off at least .010 past the length of the mark to where they are "just touching".