Quote Originally Posted by JeffreyDeGraff View Post
How have you determined what your overall length for each bullet should be? Because I don’t understand your exact process, I will tell you mine. For each different bullet you load, you will need to find an overall length with the chamber/throat of your rifle barrel. There are several different ways to go about this (hornady modified case with their tool, Frankford Arsenal tool that mounts on a cleaning rod, or dimpling a fired case and pushing it with a bullet in it, into the rifling). After you have done this, you measure the the bullet and case with a comparator ( like your homemade one) that way you can get a measurement to a datum point that is more consistent than the tip of the bullet. Each different bullet will have a different measurement, so you should have one length for the Sierra 90gr one for the Berger and one for the barnes. All of them should be different.


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I put a bullet in a case and load it long.
I try to chamber it with the bolt.
I’ll turn in the bullet seater a quarter turn (repeat) until it seats in the chamber.
I use that as my new start point.

So am finding the lands with every load.

I just thought the dia datum would all bullets would end up being the same with in reason. Because they have to touch the barrel at the same point.


Thank you for your reply