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Rifles, Reloading, Optics, Equipment
Reloading
Concentricity Issue?
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<blockquote data-quote="AZShooter" data-source="post: 896882" data-attributes="member: 5219"><p>You said you didn't have an issue with the break in. Was that with virgin brass? But have issues with the once fired brass? Do you have a concentricity gauge? I would be checking fired but unsized brass and sized once fired brass first. Then I would be checking runout of the bullet. </p><p></p><p>If you can get to a borescope inspect the throat to see if it was cut properly. Since I have acquired my borescope I have discovered some rifles with crooked throats. I could see that the lands are longer on one side and shorter on the opposite side of chamber. </p><p></p><p>Is this a custom rifle? Was the action trued? There is a possibility that the bolt face is not 90 degrees to the chamber centerline. I encountered this once with a custom rifle. It shot virgin brass perfectly but once fired brass shot horribly. Once the bolt face was squared properly and headspace readjusted it shot fine. </p><p></p><p>This is going to require some effort on your part to solve the issue. When you do please be sure to post your findings here.</p></blockquote><p></p>
[QUOTE="AZShooter, post: 896882, member: 5219"] You said you didn't have an issue with the break in. Was that with virgin brass? But have issues with the once fired brass? Do you have a concentricity gauge? I would be checking fired but unsized brass and sized once fired brass first. Then I would be checking runout of the bullet. If you can get to a borescope inspect the throat to see if it was cut properly. Since I have acquired my borescope I have discovered some rifles with crooked throats. I could see that the lands are longer on one side and shorter on the opposite side of chamber. Is this a custom rifle? Was the action trued? There is a possibility that the bolt face is not 90 degrees to the chamber centerline. I encountered this once with a custom rifle. It shot virgin brass perfectly but once fired brass shot horribly. Once the bolt face was squared properly and headspace readjusted it shot fine. This is going to require some effort on your part to solve the issue. When you do please be sure to post your findings here. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Concentricity Issue?
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