Ring Height?

Discussion in 'Long Range Scopes and Other Optics' started by T Shot, Sep 10, 2012.

  1. T Shot

    T Shot Well-Known Member

    Messages:
    69
    Joined:
    Sep 3, 2012
    I have a rem 700 with heavy barrel and Zeiss 4.5-14x50, just recently got it set up and got my first few groups in. after zeroing i come to find out that my have about 22 or 23 inches of travel up and about 44 or so down. i would like to have the cross-hairs more to the center-line of the scope. i thought about getting some of the burris sig. zee rings with the offsets but i think ill have to use the high ones which will give a pretty decent gap between the barrel and objective. Any suggestions? Thanks
     
  2. Farmer Rob

    Farmer Rob Active Member

    Messages:
    42
    Joined:
    Jan 1, 2012
    Rings add the same to the front and back, better to add a 20moa rail, then you will have 43 up ans 24 down.
     

  3. T Shot

    T Shot Well-Known Member

    Messages:
    69
    Joined:
    Sep 3, 2012
    so a 20MOA rail will virtually give me enough angle to reverse up and down travel?
     
  4. claybuster

    claybuster Member

    Messages:
    8
    Joined:
    Jul 22, 2012

    It will give you 20 MOA.
     
  5. Farmer Rob

    Farmer Rob Active Member

    Messages:
    42
    Joined:
    Jan 1, 2012
    T,

    Essentially in your case yes.

    With your current set up, if your zeroed at 100 you will run out of adjustment at about 600m if your shooting 308 and a 20 moa rail will allow you to shoot to beyond 1000m.

    It just gives you much more adjustment up.

    The biggest problem with most setups is the scope adjustment is in the middle of of the scope at about 100m and you will never ever need the bottom half of your scopes adjustment range, so adding a 20moa scope lets you use some of this wasted adjustment.
     
  6. T Shot

    T Shot Well-Known Member

    Messages:
    69
    Joined:
    Sep 3, 2012
    Thanks for the info. I have always used flat bases in the past. My biggest concern is that i want have the zero of the rifle more toward the mechanical zero of the scope or below, therefore as i dial out to 700 yards or so i wont be nearing the limit of elevation causing stress on the springs and what-not. I prob will not be shooting this rifle out to 1000 but it will be nice to know that i can i ever get the opportunity.
    gun)
     
  7. Farmer Rob

    Farmer Rob Active Member

    Messages:
    42
    Joined:
    Jan 1, 2012
    and that is exactly what a 20moa rail will do for you
     
  8. T Shot

    T Shot Well-Known Member

    Messages:
    69
    Joined:
    Sep 3, 2012
    One more question about a 20 moa rail..... i read an article that someone posted in another forum that said if your mounting holes were drilled out of alignment with the barrel, it will warp or lack of better words, twist the receiver? i don't think my receiver is drilled out of alignment due to the fact that i am pretty close to mechanical zero in windage, but if so will the rail actually twist my action? If so, what kind of problems will that actually cause for me?

    Again, thanks for the input.
     
  9. Dr. Vette

    Dr. Vette Well-Known Member

    Messages:
    2,024
    Joined:
    Dec 30, 2009
    The Burris Signature rings will do exactly what you ask for, just like you asked in your first post. You can change the inserts as you need adding +/- 20 in the front as well as the back. I use them on most of my rifles and really like them. Doing this you won't have to use any rail at all - just the same bases you have - and you can adjust as needed.

    The bottom of this page shows the ring height:
    Scopes - rifle scopes, handgun scopes, hunting scopes by Burris Optics
    Compare it to what youhave now to determine if you need a medium or high. I suspect high, but if you use a -20 in the front ring and + 10 or +20 in the back you'll appreciate it.

    Using these rings I can adjust the tilt of my scope as I see fit and I'm not locked in to the angle machined into the base. Some rifles take only a total of 10, others up to 40.
    If you buy the Signature rings also buy the kit with the 5/10/20 inserts as you'll need that too.
     
  10. T Shot

    T Shot Well-Known Member

    Messages:
    69
    Joined:
    Sep 3, 2012
    Dr.Vette
    i thought the burris sig rings would do the same for me as the angles rail would but don't have experience with either. like everyone else, i would like my objective as close to the barrel as possible. The current rings i have now measure .400" thick and leave about .200" gap between the barrel and the objective, which height do you think i need the high?
    IMOP i think the burris website is not very clear on the measurement specs....
     
  11. Dr. Vette

    Dr. Vette Well-Known Member

    Messages:
    2,024
    Joined:
    Dec 30, 2009
    Bottom of the page lists the specs for the Burris rings. I'm not sure what appears confusing to you so if you could let us know that would help.

    Where are you measuring your .400 inch thick for the rings? I suspect you may be including the portion that goes into the base, i.e. the dovetail? The standard measurement of height does not include the dovetail portion. See C in the picture below of the far left "Universal Dovetail" drawing.

    [​IMG]


    As noted previously, the inserts in the Signature rings allow you more flexibility in adjusting the scope as you're not "locked into" a 20 MOA angle as you would be with a 20 MOA base. To use a 20 MOA base you will need not only the base but also different rings as I assume (big word) that you're using a dovetail front base and a windage screw rear base. If that is not correct then please let us know.
     
  12. T Shot

    T Shot Well-Known Member

    Messages:
    69
    Joined:
    Sep 3, 2012
    I currently have burris extreme tactical two piece bases, they are weaver style. and for the rings i have, i measured with my calipers, as what is labeled "C" in the picture. So i guess the .065 is added to the length "C". I'm try to calculate which height i need.
    Will the angle produced by the inserts be enough to make a measurable difference between the barrel and the objective??
     
  13. Dr. Vette

    Dr. Vette Well-Known Member

    Messages:
    2,024
    Joined:
    Dec 30, 2009
  14. T Shot

    T Shot Well-Known Member

    Messages:
    69
    Joined:
    Sep 3, 2012
    Thanks. As you stated a few posts ago, these are what i wanted for the resolution.

    The only reason i included the "measurable difference" is because the rings i currently have set my scope a little higher than i would like. therefore i am either going to be cutting it close with the mediums as they may not even work or with the highs, they will be higher than what i have now. lightbulb to bad they don't make a medium high!