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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Shimming rear base
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<blockquote data-quote="steve smith" data-source="post: 22596" data-attributes="member: 110"><p>remember guys that the amount of shim needed is directly proportional to the lenght of the base itself. Not all bases are the same length. Lets say your base is 7.05" front to back, now add a shim of .020". This would mean that for every 7.05" the .020" elevation is gained. Since we typicaly use 100yds as a zero and there are 3600" in 100yds, it is easy to figure the true amount of shim needed. (3600/ length of base)x(thickness of the shim) ex. (3600/7.05 = 510.63829) multiply by .020" = 10.212765". So if your base is 7.05" long and you use .020" shim you would get 10.25" elevation. Remember, the shorter the base the less shim you will need. A 6" base would give 12" elevation with .020" shim.</p></blockquote><p></p>
[QUOTE="steve smith, post: 22596, member: 110"] remember guys that the amount of shim needed is directly proportional to the lenght of the base itself. Not all bases are the same length. Lets say your base is 7.05" front to back, now add a shim of .020". This would mean that for every 7.05" the .020" elevation is gained. Since we typicaly use 100yds as a zero and there are 3600" in 100yds, it is easy to figure the true amount of shim needed. (3600/ length of base)x(thickness of the shim) ex. (3600/7.05 = 510.63829) multiply by .020" = 10.212765". So if your base is 7.05" long and you use .020" shim you would get 10.25" elevation. Remember, the shorter the base the less shim you will need. A 6" base would give 12" elevation with .020" shim. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Shimming rear base
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