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AR15.COM
1/4/2008 12:55:42 PM EDT
Do you sight in a 3x9 scope on 3 or 9 power?
1/4/2008 1:09:53 PM EDT
[#1]
Anyone?
1/4/2008 1:10:59 PM EDT
[#2]
You'll probably wind up putting your scope on one power and leaving it there.  I'd say to sight it in at high power, it should still be on if you back down to low power.  If you sight it in at low power, you're more likely to be off when you increase magnification.
1/4/2008 1:11:06 PM EDT
[#3]
Doesn't matter.
1/4/2008 1:14:32 PM EDT
[#4]

Quoted:
Doesn't matter.


with quality optics.  I've had cheap scopes before that wouldn't stay zero at all powers.
1/4/2008 1:15:21 PM EDT
[#5]
Sight in at 9X, since this allows for the most precision. Then confirm that your zero does not change with different power settings. If it does change zero when you change power, get a new scope.
1/4/2008 1:15:40 PM EDT
[#6]
I usually sight in at 9X, then fire a group at 3X just to confirm that POI has not changed.
1/4/2008 1:46:34 PM EDT
[#7]
You should zero at the highest power (and many scopes with ranging reticles are only accurate when set on the highest power).

Then, you should, by default, leave the scope at the LOWEST power.  This allows the widest field of view  and the easiest/fastest target acquisition.  Then, once acquired, you can raise the magnification if required.

-Troy
1/4/2008 6:56:35 PM EDT
[#8]
Bump for more explanations.
1/4/2008 7:02:21 PM EDT
[#9]
With most "quality" optics, it doesn't matter.  But generally, sight at the highest power.  The crosshairs may move a little.  If you sight at high power, the margin of error will have less effect on your point of impact at a lower magnification than if you sight a low power and use it at a higher power.

1/4/2008 7:07:00 PM EDT
[#10]

Quoted:
Bump for more explanations.


You've gotten it.

I have a nice Zeiss 3X9 and sight it in at 9 then dial it back to 3 to make sure it's still on target.  I keep it at 3 mainly because shots around here are usually 30-60 yards.