Vortex pst 6-24x50 ffp owners I have a question

[SofaKing]

A little background on me I currently own 4 vortex viper series scopes. 1st 6.5-20x50 pa, 2nd 2.5-10x44, 3rd 4-16x50 hs-lr, 4th 6-25x50 pst ffp. Now the pst is my newest scope and first ffp scope. And after mounting it on my sendero I noticed something I've never had with any of my other vipers. When you look through the eyepiece you can move ever so slightly and see the bottom and side of the front objective Bell let's call it black ring. As you would with my other scopes.

Now if you look towards the top and move ever so slightly up towards the top. The image washes out and you don't see the black ring. All my the other scopes you can move around slightly up and down or side to side and still see the black ring. This scope on any power and side adjustment @ any setting end up with a washed out image look slightly up. None of my other scopes are like this. Is it finicky because of being ffp? And it seems as this optic is fussy to get the eye lined up for a clear image.
Has any had or have a similar experience?

 

[dok7mm]

Sounds like to you need to re-set your scope eye relief. I have owned several PSTs in FFP and never experienced this problem. As I never used the SFP scopes, it is possible the FFP may be more sensitive, when it comes to setting up the eye relief. I try to set it up for a happy medium between bench shooting and prone bipod use. I go back and forth between lower and higher magnifications, until I find the best eye relief for my usage. Only then, will I level and tighten rings to spec. and set my anti-cant level.

 

[SofaKing]

Sounds like to you need to re-set your scope eye relief. I have owned several PSTs in FFP and never experienced this problem. As I never used the SFP scopes, it is possible the FFP may be more sensitive, when it comes to setting up the eye relief. I try to set it up for a happy medium between bench shooting and prone bipod use. I go back and forth between lower and higher magnifications, until I find the best eye relief for my usage. Only then, will I level and tighten rings to spec. and set my anti-cant level.

I'll have to revisit the eye relief.

Can you see the black ring inside your scope on top as well as bottom and sides?

 

[dok7mm]

The black ring, you are describing, is referred to as vignetting. The further your eye is from the scope, the thicker the ring will appear. Some scopes, not having adjustable parallax, can benefit from vignetting. It can force your eye, ie cheek weld, to a position where the vignetting is a consistent thickness around the scope. You can increase the amount by moving the scope slightly forward.

Google scope vignetting to find more detailed info. The Vortex PST has adjustable parallax, so you can set up your scope to be free of vignetting or not. You really need to study up on setting eye relief for your shooting position, along with proper ring height and parallax adjustment.

 

[SofaKing]

The black ring, you are describing, is referred to as vignetting. The further your eye is from the scope, the thicker the ring will appear. Some scopes, not having adjustable parallax, can benefit from vignetting. It can force your eye, ie cheek weld, to a position where the vignetting is a consistent thickness around the scope. You can increase the amount by moving the scope slightly forward.

Google scope vignetting to find more detailed info. The Vortex PST has adjustable parallax, so you can set up your scope to be free of vignetting or not. You really need to study up on setting eye relief for your shooting position, along with proper ring height and parallax adjustment.

Here is what I'm talking about. Top photo whites out and bottom you can see the black. I know it's not the best images it's the phone could capture. best I can do with

 

[SofaKing]

It's only happening on 6-8 power once you adjust up to around 9 power it clears up. And that is with the parallex set to the appropriate yardage of the target.

 

[dok7mm]

The pictures make it hard to tell for sure, but there seems to be some kind of flaw, not normal vignetting caused by eye relief. I would contact Vortex customer service, if you can't find a mounting problem.

When you mount the rifle to your shoulder (eyes closed), then open your eyes, are you looking straight thru center of scope? The parallax numbers rarely match actual parallax adjustment needed.

 

[SofaKing]

The pictures make it hard to tell for sure, but there seems to be some kind of flaw, not normal vignetting caused by eye relief. I would contact Vortex customer service, if you can't find a mounting problem.

When you mount the rifle to your shoulder (eyes closed), then open your eyes, are you looking straight thru center of scope? The parallax numbers rarely match actual parallax adjustment needed.

I'm actually going to make the trip to Middleton and go directly to vortex and have the m take a look at it. After talking to the guys at the shooting supply store it seems they are great to deal with and are more than happy to help.