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Rifles, Reloading, Optics, Equipment
Gunsmithing
Recoil lug thickness studies
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<blockquote data-quote="tobnpr" data-source="post: 2813453" data-attributes="member: 68758"><p>This is simple physics.</p><p>No different than on a jobsite when I see a framer use a right angle clip for a structural attachment, and his attachment points to the structure (pins, screws, etc) are an inch inside from the bend, instead of as tight to the inside corner as you can get it. Forces will easily flex the angle away from the structure in the first scenario- but there's no room for movement when properly installed in the second one.</p><p></p><p>If you imagine the contact surface where the lug will seat, if it's not precisely at 90 degrees to the bottom of the receiver/parallel to the receiver ring- but rather angled outwards/downwards, the bottom of the lug is where contact is first made- and there is a gap above. Under sufficient recoil impulse, there <em>is</em> space for the lug to flex/bend. This can be easily checked with some contact blue or stock inletting black, but it's so easy to bed a lug that there's no reason not to...</p></blockquote><p></p>
[QUOTE="tobnpr, post: 2813453, member: 68758"] This is simple physics. No different than on a jobsite when I see a framer use a right angle clip for a structural attachment, and his attachment points to the structure (pins, screws, etc) are an inch inside from the bend, instead of as tight to the inside corner as you can get it. Forces will easily flex the angle away from the structure in the first scenario- but there's no room for movement when properly installed in the second one. If you imagine the contact surface where the lug will seat, if it's not precisely at 90 degrees to the bottom of the receiver/parallel to the receiver ring- but rather angled outwards/downwards, the bottom of the lug is where contact is first made- and there is a gap above. Under sufficient recoil impulse, there [I]is[/I] space for the lug to flex/bend. This can be easily checked with some contact blue or stock inletting black, but it's so easy to bed a lug that there's no reason not to... [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Gunsmithing
Recoil lug thickness studies
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