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Old March 5, 2018, 10:46 PM   #16
Yosemite Steve
Senior Member
 
Join Date: December 27, 2017
Posts: 460
Quote:
I have no idea what my OAL is.
What the....?

Quote:
That's what I do, but I measure the headspace first and seat to about 0.010" deeper so as not to impinge onto the lands.
I think what you mean to say is that you measure your lands distance first. Headspace really has nothing to do with bullet seating depth. Headspace is how much play the case has in the chamber between the bolt face and the shoulder/datum.

Quote:
Forget the off the lands stuff too. It's unnecessary and your rifle may or may not like 20 thou off the lands.
Don't forget it. Maybe just don't go there quite yet. There is much to be said about seating depth adjustments. Some don't like to do it and some get great results from it. Start with manufacturers' recommendations and then only tweak one thing at a time if you want to experiment.

And I concur the Unclenick is #1 helper out there!
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