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Rifles, Reloading, Optics, Equipment
Gunsmithing
Why dial a rifle bore within .0001"
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<blockquote data-quote="J E Custom" data-source="post: 1159787" data-attributes="member: 2736"><p>I 100 % agree with this, It is a combination of good barrel, good workmanship and good ammo.But do not get angered when/if someone tells me it is a waste of time, Because the craftsman in me tells me to do the best job that I can Irregardless of what the task is.</p><p></p><p>I also believe that Error can accumulate/add up, and have an effect on the end results. like</p><p>Specweldtom, I don't have to make a living gun smithing and probably do take more time that professional Gun smiths do to re barrel a rifle. </p><p></p><p>There have been some very good post with lots of experience and logic and I don't think anyone knows how much precision is to much or even enough. But we all know how much is not enough by the performance of the weapon.</p><p></p><p>With all of the talk about the equipment precision I had to go back and test it's accuracy. Again, I saw many Videos of people talking about run out and was surprised at the number of people that</p><p>though 0.005 thousandths run out on there chuck was close enough/ok (I do not , and never will).</p><p></p><p>I used a 0.000005 digital dial indicator (Very hard to use because of it's sensitivity) to check mine and it was .0005 (One half thousandth) off</p><p>so I went to work truing it. I never did get it perfect (0.00000) and after 3 to 4 hours of trying the best I could do was 0.000015 (one and one half 10 thousandths) I was still not happy but that was the best I could do with the chuck I had.</p><p></p><p>I also revisited the tail stock alignment and was able to get it dead on (0.00000) with the first 2.5 inches of the quill It moves off after that to 0.000005 to the end of travel (Still having trouble understanding this one) but now I know to use only the first 2.5 inches of the quill if I can. </p><p></p><p>Will it make a difference ? I think so, If only in confidence that it is well below the norm for the equipment I use. I know that there is more precise equipment that will beat this but most cant afford it. </p><p></p><p>I am also revisiting my internal inspection process to see if it is accurate or not and if it needs revising. I have in my possession, a premium barrel that was rejected. and did not want the </p><p>numbers(on purpose so I would not be influenced with my readings) and wont ask for them until I am finished checking it my self. this should tell me if my method is viable or a waste of time.</p><p></p><p>I know that there are Professional Gun smiths that have the ability and equipment to do better work than I can so I just have to try harder.</p><p></p><p>A good shooting rifle is not just a good barrel or good Gun smithing, It is the sum of all components that go into an accurate rifle, So improvements in any area is worth the effort.</p><p></p><p>I echo the comments that this has been a good post and should be a wakeup call for many of us.</p><p></p><p>J E CUSTOM</p></blockquote><p></p>
[QUOTE="J E Custom, post: 1159787, member: 2736"] I 100 % agree with this, It is a combination of good barrel, good workmanship and good ammo.But do not get angered when/if someone tells me it is a waste of time, Because the craftsman in me tells me to do the best job that I can Irregardless of what the task is. I also believe that Error can accumulate/add up, and have an effect on the end results. like Specweldtom, I don't have to make a living gun smithing and probably do take more time that professional Gun smiths do to re barrel a rifle. There have been some very good post with lots of experience and logic and I don't think anyone knows how much precision is to much or even enough. But we all know how much is not enough by the performance of the weapon. With all of the talk about the equipment precision I had to go back and test it's accuracy. Again, I saw many Videos of people talking about run out and was surprised at the number of people that though 0.005 thousandths run out on there chuck was close enough/ok (I do not , and never will). I used a 0.000005 digital dial indicator (Very hard to use because of it's sensitivity) to check mine and it was .0005 (One half thousandth) off so I went to work truing it. I never did get it perfect (0.00000) and after 3 to 4 hours of trying the best I could do was 0.000015 (one and one half 10 thousandths) I was still not happy but that was the best I could do with the chuck I had. I also revisited the tail stock alignment and was able to get it dead on (0.00000) with the first 2.5 inches of the quill It moves off after that to 0.000005 to the end of travel (Still having trouble understanding this one) but now I know to use only the first 2.5 inches of the quill if I can. Will it make a difference ? I think so, If only in confidence that it is well below the norm for the equipment I use. I know that there is more precise equipment that will beat this but most cant afford it. I am also revisiting my internal inspection process to see if it is accurate or not and if it needs revising. I have in my possession, a premium barrel that was rejected. and did not want the numbers(on purpose so I would not be influenced with my readings) and wont ask for them until I am finished checking it my self. this should tell me if my method is viable or a waste of time. I know that there are Professional Gun smiths that have the ability and equipment to do better work than I can so I just have to try harder. A good shooting rifle is not just a good barrel or good Gun smithing, It is the sum of all components that go into an accurate rifle, So improvements in any area is worth the effort. I echo the comments that this has been a good post and should be a wakeup call for many of us. J E CUSTOM [/QUOTE]
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Why dial a rifle bore within .0001"
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