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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
To shim or not to shim
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<blockquote data-quote="Blackhawk" data-source="post: 2016246" data-attributes="member: 105459"><p><strong>Here is my dilemma</strong>.</p><p><em>I just purchased a savage high country rifle in .300Win Mag.</em></p><p><em>I mounted a Weaver 20 MOA rail (checked for flatness and spring)</em></p><p><em>then using Weaver Gram Slam rings in the high configuration set a Nikon Monarch #5 5.0 x 20 X 50 with ED Glass.( rings were lapped as a unit before scope was mounted )</em></p><p><em>This combination allowed me just over 1/8" clearance between the bottom of the rifle scope bell and the top of the rifle barrel so I assumed that I was OK.</em></p><p><em>After load development started I realized that even though my Ed and SD numbers were promising I was 2" high @100yards I brought my scope's adjust down until it peaked out and still I was 2" high.</em></p><p><em>Now the question I ordered new Weaver Grand Slam Rings in a medium height and hopefully this may solve my issue but in the interim, I was wondering if shimming the scope would possibly help.</em></p><p> <em>To that end, if my downward scope adjustment is maxed out and I am still 2" high at @100yards which ring do I need to shim the front or rear in order to make the necessary adjustments how much shim height will be needed.</em></p><p><em>My gut tells me it would take a .005" shim under the front ring in order to make the correct amount of adjustment.</em></p><p><em><strong>On the other side of the coin @ 200 meters I am dead on so shall I shim this scope, put on lower rings,or leave it alone.</strong></em></p><p> <em><strong>Your thoughts, please.</strong></em></p></blockquote><p></p>
[QUOTE="Blackhawk, post: 2016246, member: 105459"] [B]Here is my dilemma[/B]. [I]I just purchased a savage high country rifle in .300Win Mag. I mounted a Weaver 20 MOA rail (checked for flatness and spring) then using Weaver Gram Slam rings in the high configuration set a Nikon Monarch #5 5.0 x 20 X 50 with ED Glass.( rings were lapped as a unit before scope was mounted ) This combination allowed me just over 1/8" clearance between the bottom of the rifle scope bell and the top of the rifle barrel so I assumed that I was OK. After load development started I realized that even though my Ed and SD numbers were promising I was 2" high @100yards I brought my scope's adjust down until it peaked out and still I was 2" high. Now the question I ordered new Weaver Grand Slam Rings in a medium height and hopefully this may solve my issue but in the interim, I was wondering if shimming the scope would possibly help. To that end, if my downward scope adjustment is maxed out and I am still 2" high at @100yards which ring do I need to shim the front or rear in order to make the necessary adjustments how much shim height will be needed. My gut tells me it would take a .005" shim under the front ring in order to make the correct amount of adjustment. [B]On the other side of the coin @ 200 meters I am dead on so shall I shim this scope, put on lower rings,or leave it alone. Your thoughts, please.[/B][/I] [/QUOTE]
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To shim or not to shim
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