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Rifles, Reloading, Optics, Equipment
Gunsmithing
Lug setback? What am I missing?
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<blockquote data-quote="codyadams" data-source="post: 1820855" data-attributes="member: 87243"><p>It's hard for me to make sense of it too.....if I hadn't seen the first hand result from other people, I would have a hard time believing it, honestly when I first thought of it without doing research, I figured bolt thrust would be LESS, due to being spread over a larger area.....however, the term "psi" somewhat helps me understand....as there is more surface area for the forces of expanding gasses to be imparted onto the bolt, thus being transferred to the supporting areas of said bolt, the lug abutments. </p><p></p><p>I think the size of the lugs would be a helpful number in a calculation, if you were trying to figure the point at which the lugs would fail, or be "set back", which would also include the amount of supporting material, the materials composition, rockwell hardness, density, and so on....I have absolutely no clue however on what to do with that information to calculate the yield strength....</p></blockquote><p></p>
[QUOTE="codyadams, post: 1820855, member: 87243"] It's hard for me to make sense of it too.....if I hadn't seen the first hand result from other people, I would have a hard time believing it, honestly when I first thought of it without doing research, I figured bolt thrust would be LESS, due to being spread over a larger area.....however, the term "psi" somewhat helps me understand....as there is more surface area for the forces of expanding gasses to be imparted onto the bolt, thus being transferred to the supporting areas of said bolt, the lug abutments. I think the size of the lugs would be a helpful number in a calculation, if you were trying to figure the point at which the lugs would fail, or be "set back", which would also include the amount of supporting material, the materials composition, rockwell hardness, density, and so on....I have absolutely no clue however on what to do with that information to calculate the yield strength.... [/QUOTE]
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Lug setback? What am I missing?
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