When measure your OAL

[Kenk]

When  measure your OAL, are you keeping the caliper arm off to the side of the primer? I would assume that if the primer is seated correctly (slightly deeper than flush) it won't matter
Thanks

[Spudmeister]

Good morning,

Correct.  Never hurts to check more than one cartridge as well. 

[Kenk]

Lol, I probably check way more than I need to, but that's ok
Thanks!

[sqlbullet]

I don't.  A COAL that is off can alert me to a proud primer.