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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
XLR stock issues
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<blockquote data-quote="tacomHQ" data-source="post: 2566862" data-attributes="member: 67159"><p>Harmonics, surfaces, temperatures, torque on the system.</p><p>Starting with surfaces- friction torque and bolt torque are not the same thing. Think Rod bolts. You tighten to a "stretch value" or an angle value. However, if you miss your mark you don't keep on going. You loosen then retorque again. Loctite is a bit of a Bandaid. Pure friction torque- an anodized surface on an anodized surface (scopes) is a totally false read without precautions. </p><p>Temperatures- what is my operating temperature? Even though the load is relatively low the difference on the stretch of the bolt at 0deg and 110deg is significant. Think of expansion coefficient of aluminum. </p><p>Torque- how does it deform your action? Without a 100% contacted surface you will "bend " something" as you add torque. Now change the temperature- change the shape- change my impact point. We settle optics for at least one day to determine if "relief" occurs due to a misloaded component. How many times have you heard people not change in group sizes and position based on how they torqued their action? That inherently says there is a problem. </p><p>Harmonics- don't stop at the bolt face, or throat, or lands... and they do not necessarily always reduce as they transition. You can induce gain into a harmonic. By design or accident. </p><p>We completely divorce our actions and lugs from the chassis. There is no metal to metal or metal to epoxy contact. O-rings and adhesives. Dead is the game.</p><p>Concerning fasteners (being simple minded)- my .308 Savage has the same fastener as is found in my 375CheyTac action... How many main bolts are in a current LS motor as compared to the first small block Chevy. </p><p>Our fasteners are set at 30-40inch pounds. More of a safety device versus a retaining device.</p></blockquote><p></p>
[QUOTE="tacomHQ, post: 2566862, member: 67159"] Harmonics, surfaces, temperatures, torque on the system. Starting with surfaces- friction torque and bolt torque are not the same thing. Think Rod bolts. You tighten to a "stretch value" or an angle value. However, if you miss your mark you don't keep on going. You loosen then retorque again. Loctite is a bit of a Bandaid. Pure friction torque- an anodized surface on an anodized surface (scopes) is a totally false read without precautions. Temperatures- what is my operating temperature? Even though the load is relatively low the difference on the stretch of the bolt at 0deg and 110deg is significant. Think of expansion coefficient of aluminum. Torque- how does it deform your action? Without a 100% contacted surface you will "bend " something" as you add torque. Now change the temperature- change the shape- change my impact point. We settle optics for at least one day to determine if "relief" occurs due to a misloaded component. How many times have you heard people not change in group sizes and position based on how they torqued their action? That inherently says there is a problem. Harmonics- don't stop at the bolt face, or throat, or lands... and they do not necessarily always reduce as they transition. You can induce gain into a harmonic. By design or accident. We completely divorce our actions and lugs from the chassis. There is no metal to metal or metal to epoxy contact. O-rings and adhesives. Dead is the game. Concerning fasteners (being simple minded)- my .308 Savage has the same fastener as is found in my 375CheyTac action... How many main bolts are in a current LS motor as compared to the first small block Chevy. Our fasteners are set at 30-40inch pounds. More of a safety device versus a retaining device. [/QUOTE]
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