Adjustable Objective Question


tedicast

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I just got a Simmons Pro 50, 6X18X50 scope. It has an adjustable objective. I have never had a scope that had adjustable objective. It has settings for 15, 20, 30, 50, 75, 100, 125, 150 yards, and infinity. Can someone explain this to me? The manual that came with the scope didn't even mention it.

Thank in advance guys.

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Re: Adjustable Objective Question

The AO is an adjustment to take the paralax out of the scope. If you are shooting at 100 yards, set the AO to 100 yards and it should be real clear!

The same goes for different yardages that you are shooting. Set the AO to what range you are shooting and the object should be clear!

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Re: Adjustable Objective Question

Most target scopes have AO!

I guess you could use it as a range finder if you have lots of time. Put it on what you want to shoot, adjust the AO where it is clear, look to see the yardage and then you will know what to do as far as the hold!

Not very efficent but it might work. The only scopes I have with AO are for target shooting or for varmits if I have a steady rest!

I don't have it on any of my hunting rifles.

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Re: Adjustable Objective Question

[ QUOTE ]

I guess you could use it as a range finder if you have lots of time. Put it on what you want to shoot, adjust the AO where it is clear, look to see the yardage and then you will know what to do as far as the hold!

[/ QUOTE ]

NO! The distances are for reference only. I have seen scopes with AO that needed to be set on 200 to be clear at 100 yards. They are not rangefinders.

The adjustable objective allows the shooter to remove the paralax at whatever distance when using whatever magnification level. Have you ever tried to use a higher scope setting up close and its all blurry? The AO can be adjusted to give you a crystal clear view of the target and the reticle. I prefer AO scopes. Most of my scopes do indeed have an AO or a side focus knob. Yes, I use them while hunting. If I am in an area that will offer shots out to 75 yards, I will set the AO to be clear at the max distance. Close shots will be easy and not need an adjustment. Longer range shots need more time and fine tweaking for best accuracy. If I am in an area where shots will probably be over 200 yards, I will set the AO on 300 yards and go from there.

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Re: Adjustable Objective Question

[ QUOTE ]

Man, now I'm really confused I have had 3x9 scopes for many years, and don't see a different

sight pic at different power settings. Is this mainly for higher power scopes than a 3x9 ?

[/ QUOTE ]

You will notice it more with a higher power scope. A simplified version is that at different ranges, you may not be able to get a good picture of your crosshairs and your target at the same time. One or the other sometimes gets blurry. An AO head will allow you to get a crisp picture of both of them. Like AJ said, don't use them for rangefinders, the number is usually off.

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