Adjustable Objective?

Big J · Dec 10, 2009

From my other post there was a comment about AO on a deer rifle.
Do I actually need to trade for a scope without one?

skynimrod · Dec 10, 2009

I like my ADJ OBS on my Leoupold VXll 4x12
Good for my older eyes.
Though it is my longrange Deer & Elk rifle.

JimFromTN · Dec 10, 2009

I did not see your other post so I don't know what was said. If you leave the AO set to 100yds and you don't touch it, its like having a scope that does not have one. I think most scope manufacturers set their fixed objectives on their centerfire rifle scopes to either 100 or 150 yds. Shotgun scopes, pistol scopes, and airgun scopes are set differently.

Hillbilly Hunter · Dec 10, 2009

It was me that made the comment. There is an infinty setting on Leupolds 9not sure about Nikon). In which you dont have to adjust anything. I hunted with one some I personally do not like them. If it gets moved and you have to take a quick shot, your scope may be out of focus. I should have elaborated on your other post. Sorry about that. AOs are better suited for target shooting than hunting situations.

Hillbilly Hunter · Dec 10, 2009

JimFromTN said:
I think most scope manufacturers set their fixed objectives on their centerfire rifle scopes to either 100 or 150 yds. Shotgun scopes, pistol scopes, and airgun scopes are set differently.

Yes, the parallax is set at 100 or 150 yards on a typical rifle scope.
You typically do not AO unless you are using a scope at 12x magnification or higher.

in laymans terms the AO focuses the crosshairs with the target

skynimrod · Dec 10, 2009

An A/O scope will usually clear up the scope a little for close ranges, but it is put there to compensate for paralax mostly for long range. Paralax is an optical illusion. It occurs when you move your head side to side the scope and the reticule moves and the cross hair moves to different places on the target without the gun itself moving.. and an A/O eliminates parralax at certain ranges.

I keep mine at 50 close range & 100 mostly after that.
The longer ranges of course I have time to dial it out more for clarity.