Quote Originally Posted by Robinhood View Post
The arm on your reloading press will tell you. If the bullet goes in with different pressure on each case your test will tell you nothing. They should all go in with relatively the same effort. Get to know the feel of your press. Full length sizing can tell you a lot about the hardness of your brass if you try to lube them all the same.
THANK-YOU! Just had an "Ah hah" moment... if the used brass is old, and worked more, it gets hard, and will give a different neck tension because of the lack of plasticity!!!

Good stuff, Thanks!