Eye Relied etc.

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rhtwist

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Hello,
Having a new Winchester Model 70, I installed Talley scope ring/mounts and a Burris Fullfield 3-9X40mm. Using the correct mounts which have an extended front mount, I have the optic as rearward as it will go.I can not get the correct aperture? size without moving my face closer than I feel is normal. I measured what I feel comfortable at and the eye relief is around 6" from the rear of the scope.
What is the likely issue with the above symptoms??
 
It sounds like either a stock fitment or a technique issue..... Or you got the extension ring flipped around in his pointed forward lol.
 
Those mounts can be mounted either way. If you set them up so both are offset toward the rear it will move the scope way back, probably too far. Depending on the scope I will often have one turned opposite from the other. You have lots of room to work with by experimenting.
 
Yes the extension is rearward allowing the front bell of the scope as rearward a travel as is possible.If IIRC the length of pull was holding the rifle on the upper arm and the hand should be comfortably holding the pistol grip area. In my case it is a stretch. Any advice on checking it more properly would be advantageous!!
 
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[Hey jmr40,
In my case only the front ring has the extension and the scope is as far rearward as it goes. The extension would have to go over the ejection port to be further toward the butt.
 
Yes, that is the way it is oriented and I checked that these were the correct mounts for my rifle. Thanx
 
Seems that way, I wanted learned opinions as I haven't shot with a scope in quite a while.
 
Most scopes have a 3 to 4 inch eye relief, s that is what you want to set them at. As you look through the scope you do not want to see a black ring around the lens (other than the scope body)

Here is an easy way to measure for length of pull. Hold your upper arm level with the floor with your lower arm bent at 90 degrees. Then bend your trigger finger 90 degrees so that it too is parallel to the floor. Now measure from inside your upper arm to the inside of your trigger finger.That is your length of pull.

There are other methods to figure out length of pull, the above method is one of the simplest methods to use.

You really want to have the scope set correctly for the eye relief set by the manufacturer. And if need be, adjust the length of pull to fit you. The average length of pull for most is usually around 13-14 inches. That will change depending on if you have long or short arms.
 
Will test it tomorrow, thanks for the correct procedure 12Bravi20! Took the rifle to an indoor range to test for function. Using Herters 150 grain soft points, it appears to shoot consistently. Except it was getting worse and worse eye relief, though I managed to get it zeroed at 25 yards. The rings were not tight enough and the scope had slipped forward...... The only thing I found was that some rounds did not feed into the chamber. Mashing the exposed lead tips of the bullets. Overall a little bit of a thumper.
 
Good Day,
I measured the lop on the rifle at approx. 13 3/4". My arm to finger somehow seems to be 11 1/2". Don't know if I did something wrong but I am/was 6' and have appropriately sized arms. Moving the scope back to it's starting position help, but I would still like to gain a little more. Possibly cutting the front of the forward extended scope ring/ mount at an angle to gain maybe a 1/4", appears as if the front bell is going to touch before I run out of 1" tube. The recoil pad measures 3/4". I am loathe to do much alteration until I decide if I want to send it back to the manufacturer.
Might possibly need an alternate method to use for the lop dimensioning????
 
You will most likely need different rings or mount to get the correct eye relief for your scope. And with the Burris Fullfield 3-9X40mm the eye relief should be between 3.1 and 3.8 inches.
 
I have some rifles where two piece Weaver mounts just won't work well without trying many different sets of rings for particular scopes. In this case I will install a one piece mount instead. The one piece mount gives you more flexibility on mounting the scope for the correct eye relief.

I just went through this when I put my Savage MkII in a chassis stock and also changed the scope. The factory Weaver mounts just wouldn't work well.
 
Howdy, just double checked with the manufacturer and without going to higher rings, these are it from them. I believe I can get another approx 1/4" with a minor modification. Now I am throwing caution to the wind and am sending the rifle back to Winchester. Area of immediate concern has refocused on a company's commitment to quality and customer satisfaction ?!!?!??!!!!??......
thanks
 
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