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Rifles, Reloading, Optics, Equipment
Gunsmithing
Just finished a Lothar Walther barrel
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<blockquote data-quote="Fiftydriver" data-source="post: 214918" data-attributes="member: 10"><p>Using a live pilot bushing reamer may help alot in that "Crunching" you are getting with these hard barrels.</p><p> </p><p>The solid pilot reamers have more clearance between the bore and the pilot, this allows more vibration or harmonics to develope in the reamer while cutting these hard barrels. </p><p> </p><p>Being able to fit a bushing to within 0.0002" to the bore will dramatically improve the fit to the bore and also reduce the amount of harmonics in the reamer.</p><p> </p><p>I have also found that a heavier moly, sulphur based oil helped some as well to dampen harmonics.</p><p> </p><p>I would tend to agree I am not a fan of the very hard barrels. Rocks and Kriegers are as hard as I like to use personally. They are a good ballance of barrel life and machinability with conventional reamers and cutting fluids.</p></blockquote><p></p>
[QUOTE="Fiftydriver, post: 214918, member: 10"] Using a live pilot bushing reamer may help alot in that "Crunching" you are getting with these hard barrels. The solid pilot reamers have more clearance between the bore and the pilot, this allows more vibration or harmonics to develope in the reamer while cutting these hard barrels. Being able to fit a bushing to within 0.0002" to the bore will dramatically improve the fit to the bore and also reduce the amount of harmonics in the reamer. I have also found that a heavier moly, sulphur based oil helped some as well to dampen harmonics. I would tend to agree I am not a fan of the very hard barrels. Rocks and Kriegers are as hard as I like to use personally. They are a good ballance of barrel life and machinability with conventional reamers and cutting fluids. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Gunsmithing
Just finished a Lothar Walther barrel
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