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**ar15barrels** · 09-10-2018, 12:43 PM

Originally posted by sigstroker

I might use something less permanent in case I change ammo.

Sharpie comes off with brake cleaner on a Q-tip.

**smoothy8500** · 09-10-2018, 1:17 PM

Originally posted by sigstroker

I might use something less permanent in case I change ammo.

Even if sharpie ink wasn't removable how far off can a "zero" be with different ammo? A few MOA, not an entire revolution of the elevation knob.

**ar15barrels** · 09-10-2018, 1:28 PM

Originally posted by smoothy8500

Even if sharpie ink wasn't removable how far off can a "zero" be with different ammo? A few MOA, not an entire revolution of the elevation knob.

You can't reason with people that have no understanding of the obvious.

How important is a zero stop?