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Thread: Shimming to Raise Scope

  1. #1
    Boolit Master


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    Shimming to Raise Scope

    I bought some high rings to mount a scope on a Savage Model 25 in 22 Hornet and the bell of the scope touches the barrel.
    I shimmed the scope with two pieces of business card, aprox .060”and it clears now.
    My question is weather it would be better to shim between the bases and the barrel?

  2. #2
    Boolit Master
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    Oct 2014
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    If you shim between bases and barrel, I would use a metal shim, brass if you have it available, then use some locktite or such so that things don't move around. I have done them both ways. If at the range and I need to shim, thin cardboard or a piece of target paper work for a temporary fix.

  3. #3
    Boolit Master

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    I would recommend shimming between bases an barrel with a little twist to it. I would obtain a poece of stock with the same dia as the barrel receiver ( where the blocks set) rough up the shim and bases good and clean then epoxy the shim to the bases clamping on the round stock to form the new base. Left a little proud on the edges the shim can be filled and then finished to not show at all. holes can be spotted thru after shim is glued on and cured.

    On the hornets trajectory adding .010 -.020 more to back ring would add 5 -8 mins elevation in the bases also. Her you would want to mount the rings on a bar then remove from bases. Remount rings to bases this maintains spacing and alighnment. glue shims and clamp to round stock with clamp in the center. This might help keepscope centered better and allow more elevation adjustments over distances.

  4. #4
    Boolit Master
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    I've always used copper flashing as that is what I've had available and I have different thickness. Anytime I come across a piece or scrape of copper flashing I always tuck it away for just that reason.

  5. #5
    Super Moderator

    Preacher Jim's Avatar
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    Brownells has shims that raise the base. I used them to level bases but they work great.

  6. #6
    Boolit Master


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    I got some some .030” brass strip at a local hobby shop.
    The card stock is only.010”, so I will have.010” extra space under the scope.
    Thanks for the help!

  7. #7
    Boolit Mold
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    Return the rings and buy a set of Extra High rings.
    Bolt&Barrel Gunsmithing, LLC
    www.boltandbarrel.com

  8. #8
    Boolit Master


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    Quote Originally Posted by PTCSmith View Post
    Return the rings and buy a set of Extra High rings.
    I bought the rings on line and shipping would be almost as much as the rings!

  9. #9
    Boolit Master


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    I cut the brass strip and drilled the holes and used some longer screws and used the bases to press the brass strip to the contour of the receiver!
    The shims work like a charm!

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Abbreviations used in Reloading

BP Bronze Point IMR Improved Military Rifle PTD Pointed
BR Bench Rest M Magnum RN Round Nose
BT Boat Tail PL Power-Lokt SP Soft Point
C Compressed Charge PR Primer SPCL Soft Point "Core-Lokt"
HP Hollow Point PSPCL Pointed Soft Point "Core Lokt" C.O.L. Cartridge Overall Length
PSP Pointed Soft Point Spz Spitzer Point SBT Spitzer Boat Tail
LRN Lead Round Nose LWC Lead Wad Cutter LSWC Lead Semi Wad Cutter
GC Gas Check