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Rifles, Reloading, Optics, Equipment
Gunsmithing
Truing an action.
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<blockquote data-quote="Alex Wheeler" data-source="post: 1848139" data-attributes="member: 101859"><p>Lapping has its place, its for removing a tenth or two (.0001-.0002). There is a thought that lapping with the trigger in is how it should be done because thats how the bolt is in the cocked position. Of course the bolt is not in the cocked position the second the trigger is pulled. If we back up a little, the issue with poor lug contact is the harmonic it adds due to uneven pressure on the seats. Well, if you lap a bolt in crooked you end up with a similar situation do to the case head now contacting first on one side of the bolt face. Not to mention you have created a situation where the lugs only seat in one exact position with no clearance. Of the top actions that are lapped in at the factory, none are lapped in with the trigger installed. The lugs are seated by the time the bullet enters the throat.</p></blockquote><p></p>
[QUOTE="Alex Wheeler, post: 1848139, member: 101859"] Lapping has its place, its for removing a tenth or two (.0001-.0002). There is a thought that lapping with the trigger in is how it should be done because thats how the bolt is in the cocked position. Of course the bolt is not in the cocked position the second the trigger is pulled. If we back up a little, the issue with poor lug contact is the harmonic it adds due to uneven pressure on the seats. Well, if you lap a bolt in crooked you end up with a similar situation do to the case head now contacting first on one side of the bolt face. Not to mention you have created a situation where the lugs only seat in one exact position with no clearance. Of the top actions that are lapped in at the factory, none are lapped in with the trigger installed. The lugs are seated by the time the bullet enters the throat. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Truing an action.
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