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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Hand tight switch barrel accuracy?
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<blockquote data-quote="Alex Wheeler" data-source="post: 2005924" data-attributes="member: 101859"><p>At the levels we are torquing a barrel, we are not stretching it the way we do in an engine. Its very easy to tell if a main cap in an engine is moving, you can see fretting between the block and cap. Totally different animal. On a barrel we just need to make sure it doesnt move under the loads it sees, not the loads an engine fastener sees. The torque is some what irrelevant in my opinion so long as we achieve that goal. I build mostly BR rifles, I do not use a torque wrench. But I do have a good feel since I was a mechanic for 15 years. I am in the 75ft lb range. When you get down low enough that it hardly takes any force on the wrench to break the action loose, Id say less than 30 you will start to see fliers. Theres just no reason to flirt with those low torque levels, and no one changes barrels more than BR guys, you will never wear out or hurt an action if the barrels are machined well and lubed correctly.</p></blockquote><p></p>
[QUOTE="Alex Wheeler, post: 2005924, member: 101859"] At the levels we are torquing a barrel, we are not stretching it the way we do in an engine. Its very easy to tell if a main cap in an engine is moving, you can see fretting between the block and cap. Totally different animal. On a barrel we just need to make sure it doesnt move under the loads it sees, not the loads an engine fastener sees. The torque is some what irrelevant in my opinion so long as we achieve that goal. I build mostly BR rifles, I do not use a torque wrench. But I do have a good feel since I was a mechanic for 15 years. I am in the 75ft lb range. When you get down low enough that it hardly takes any force on the wrench to break the action loose, Id say less than 30 you will start to see fliers. Theres just no reason to flirt with those low torque levels, and no one changes barrels more than BR guys, you will never wear out or hurt an action if the barrels are machined well and lubed correctly. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Hand tight switch barrel accuracy?
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