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Rifles, Reloading, Optics, Equipment
Gunsmithing
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<blockquote data-quote="Canadian Bushman" data-source="post: 933132" data-attributes="member: 41122"><p>I dont think you are following what me and tricky are saying. </p><p></p><p>A class 1,2, or 3 male thread will all thread into a class 1,2, or 3 female. </p><p></p><p>By specifying a class you are limiting the amount of slop that it will have when mated to its opposing part. </p><p></p><p>Class 1 is the sloppiest, and class 3 are the tightest. At least the tightest i ever cut. </p><p></p><p>If both your barrel and action are cut perfectly nominal at a class 3 fit, they will still be much sloppier than if you had a barrel blank cut to the actual pitch diameter that exist in your particular action. </p><p></p><p>Anyone who has dealt with enough factory actions will tell you, rarely are they perfectly nominal, or even square to the bolt race.</p><p>This is why smiths barrel an action the way they do.</p></blockquote><p></p>
[QUOTE="Canadian Bushman, post: 933132, member: 41122"] I dont think you are following what me and tricky are saying. A class 1,2, or 3 male thread will all thread into a class 1,2, or 3 female. By specifying a class you are limiting the amount of slop that it will have when mated to its opposing part. Class 1 is the sloppiest, and class 3 are the tightest. At least the tightest i ever cut. If both your barrel and action are cut perfectly nominal at a class 3 fit, they will still be much sloppier than if you had a barrel blank cut to the actual pitch diameter that exist in your particular action. Anyone who has dealt with enough factory actions will tell you, rarely are they perfectly nominal, or even square to the bolt race. This is why smiths barrel an action the way they do. [/QUOTE]
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