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Rifles, Reloading, Optics, Equipment
Gunsmithing
Adding 15moa to LW talley rings
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<blockquote data-quote="Clark" data-source="post: 626854" data-attributes="member: 6600"><p>There are different schools of thought.</p><p>A) The $100k Mausers going to Africa have Silver Solder under the scope bridge.</p><p>B) The $2k Rem700 sniper rifles have epoxy under the scope mount(s).</p><p>C) Some guys just tighten the screws to get the bases to bend a little closer to the receiver shape, and lapp out the ring holes.</p><p>D) Some guys just screw on the mounts and screw on the scope.</p><p>E) Sometimes I just TIG weld steel rings directly to the receiver, with fixtures to get the scope bore parallel to the bolt bore.</p><p></p><p>I like epoxy. Each 6-48 screw at 50% efficiency will snap off at ~ 500 pounds of axial thrust.</p><p>Expensive Devcon or cheap Bondo will both have compression yeild of ~ 20kpsi.</p><p>So we need at area of epoxy .15" x .15" for every screw, and have ~ 50 times that much.</p><p></p><p>The epoxy with release agent will have a fit that conforms to within 0.0001".</p><p>Machined surfaces with complex shapes never fit that well.</p><p></p><p>I bore sight fixture the epoxy under the bases with rings tight on a scope. That way I can get the base(s) epoxied in the right place. I want centered scopes to go quickly with rings from one of my rifles to the next an be stress free and nearly sighted in.</p><p></p><p>Here is a pic of an M39 with octagon receiver. I have milled out a female octagon on the underside of an M16 riser mount. To mate the two, there is a layer of epoxy that can be seen.</p></blockquote><p></p>
[QUOTE="Clark, post: 626854, member: 6600"] There are different schools of thought. A) The $100k Mausers going to Africa have Silver Solder under the scope bridge. B) The $2k Rem700 sniper rifles have epoxy under the scope mount(s). C) Some guys just tighten the screws to get the bases to bend a little closer to the receiver shape, and lapp out the ring holes. D) Some guys just screw on the mounts and screw on the scope. E) Sometimes I just TIG weld steel rings directly to the receiver, with fixtures to get the scope bore parallel to the bolt bore. I like epoxy. Each 6-48 screw at 50% efficiency will snap off at ~ 500 pounds of axial thrust. Expensive Devcon or cheap Bondo will both have compression yeild of ~ 20kpsi. So we need at area of epoxy .15" x .15" for every screw, and have ~ 50 times that much. The epoxy with release agent will have a fit that conforms to within 0.0001". Machined surfaces with complex shapes never fit that well. I bore sight fixture the epoxy under the bases with rings tight on a scope. That way I can get the base(s) epoxied in the right place. I want centered scopes to go quickly with rings from one of my rifles to the next an be stress free and nearly sighted in. Here is a pic of an M39 with octagon receiver. I have milled out a female octagon on the underside of an M16 riser mount. To mate the two, there is a layer of epoxy that can be seen. [/QUOTE]
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Adding 15moa to LW talley rings
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