misaligned reciever holes for scope

Discussion in 'Long Range Scopes and Other Optics' started by chopit, May 28, 2013.

  1. chopit

    chopit Member

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    I just bought a 338 win mag awr remington. Got my scope mounted, rings lapped and off to sight it in. Well the gun groups great except for the fact that it shoots 4" right at 100 yds with the windage bottomed out all the way left. Tried another set of rings I had same result. I feel sure its the holes arent square to the barrel. Someone I trust who knows everything about scopes and mounting them says he thinks we can corredt this with a set of S&K rings and bases. I know nothing of these. Anyone ever use these to correct this?
     
  2. idaho elk hunter

    idaho elk hunter Well-Known Member

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    I have dealt with this with a few different solutions. What scope are you using? I do not recommend Sheperds scopes, if the bases and rings are not just perfect they will run out of adjustment and ruin the scope. They fail to advertise that there scope has little adjustment and they want them for the most part sighted in externally. Since we are now past the 19th century I do not believe this is a way to build a scope. 2nd send it back to the manufacture and have them diagnose and possibly repair. All manufactures will do this. 3rd you can pay a reputable smith to screw in screws into the screw holes and re drill. 4th move to any brand of base and rings with some external adjustment. As I stated before I do not advocate this. I believe it adds room for movement and takes away from the long range reliability of your rifle. Good luck!
     

  3. chopit

    chopit Member

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    The scope does not have a ton of windage but its enough. It is a Swarovski Z5 with galley one piece base and ring. Lapped and bedded.
     
  4. Sully2

    Sully2 Well-Known Member

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    The breech of the barrel and the front of the receiver arent in line...i.e. parallel. A tiny bit there and it means a LOT way down stream
     
  5. chopit

    chopit Member

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    I guess the question is my guy says he can shim it out with the S&K's but if the barrel to the reciever isn't square if I sight in the further out I go it will still walk to the right. Am I thinking about this right.
     
  6. bruce_ventura

    bruce_ventura Well-Known Member

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    S&K rings will solve the boresight misalignment problem and are very elegant in appearance. The Skulptured bases are windage adjustable front and rear.

    However, S&K rings are very slender and I would be concerned about their durability on a 338 WIn Mag rifle. They cannot be lapped and can scratch your scope tube if you're not experienced with installing the rings. Plus, they take a while to install correctly. If you think you might move that scope between rifles in the future, you may regret that choice of mount.

    I recommend you consider Burris Signature rings with the the offset insert kit. They are easy to install and require no lapping. They do not look nearly as nice as S&K rings, however.

    With either approach, the rifle may or may not have a point of aim drift with increasing range. To eliminate this problem, use the RingTrue reticle alignment tool (available from HighPowerOptics) and possibly an anti-cant indicator (for long range shots).

    What type of mount are you currently using?
     
  7. FEENIX

    FEENIX Well-Known Member

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    Sorry but if it's a Remington quality problem, why not have them fix it at their cost or replace it.
     
  8. SidecarFlip

    SidecarFlip Well-Known Member

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    Absolutely. If it's a new rifle, it would be going back rather than 'band aiding' the issue.

    I had a Ruger match target pistol with the same issue (rail mount holes not square with the centerline of the receiver) and I returned it to Strum Ruger and the entire receiver was relpaced at no cost.

    When the holes were drilled and tapped it wasn't jigged properly. I would not accept it as first quality and want a refund or new receiver.
     
  9. chopit

    chopit Member

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    Its a 1998 alaskan wilderness rifle. Im gonna call remington today but I bought the gun for my first elk trip in october and I doubt I would get it back in time if they even offered to fix it. Im not counting on them doing anything since I didnt buy t new. I know now why the gun was sold to me at a good price. if I can get it to shoot straight now I will send it to them when I get back from Colorado.
     
  10. MudRunner2005

    MudRunner2005 Well-Known Member

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    Your quickest and easiest, and probably cheapest fix is to take it to a competent gunsmith and pay him $50 to re-drill the holes properly.

    That's what I'd do.
     
  11. bruce_ventura

    bruce_ventura Well-Known Member

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    You likely have a bad combination of barrel misalignment in the receiver and barrel vibration. This problem is common in production rifles. Possibly the base holes are not correctly drilled in the receiver, but that is less likely. Re-drilling the holes will cause other problems down the road should you replace barrel.

    I reread your posts. I guess you meant "Talley", not "galley". I would chuck those rings and go with a windage adjustable "standard" mount for this hunt. Leupold or Burris.
     
  12. SidecarFlip

    SidecarFlip Well-Known Member

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    Maybe you should clarify your statement to read... In my opinion in regards to scope mounts.

    Because, In my opinion, there is nothing wrong with Talley Mounts and In my opinion, the Burris mounts are not ideal for a heavy recoiling rifle.

    That distills down to you offer Burris, not Talley. I understand but you need to be a bit more translucent. Your statement is ambigious as well as misleading.

    Furthermore, if you redrill/retap the holes (a competent gunsmith or machine shop can do it), the original holes need to be filled prior to and that entails filling the holes with compatible metal and then ascertaining the true centerline in relationship with the bore of the receiver and barrel centerline and drilling/tapping the newly located holes to remount the rings (whatever brand they are).

    All of the above occurs after the receiver is disassembled.

    People take Internet comments as gospel when most are statements of opinion, not fact.
     
  13. Sully2

    Sully2 Well-Known Member

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    Re-cut the face...!!!
     
  14. chopit

    chopit Member

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    Thats what im gonna do Bruce. I dont want to redrill because if its the barrel I will be making a bigger mess. Im gonna use the S&K bases and rings. When I get back ill have the reciever blueprinted and a custom barrel put on. I meant talley rings I hate auto correct.