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Long Range Hunting & Shooting
6.5 PRC issues
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<blockquote data-quote="nralifer" data-source="post: 2710225" data-attributes="member: 94556"><p>The reason I keep emphasizing the importance of bore scoping is that it is fundamental to diagnosing a problem. When simple measures don't correct the problem then you need to LOOK for a structural problem. Looking is not a panacea. One thing that will not be seen on bore scoping is a poor alignment of the chamber to the center line of the bore. Carbon rings are not an inevitable fact of life. I have some 30 rifles that I don't clean often. I try to use powders that burn clean. I clean them usually about after 100 shots or if they quit shooting otherwise good loads poorly. A factor that favors carbon ring formation is turbulent flow of gas across a surface irregularly causing a swirling of the gas at that point. Bore scoping almost always will show this up. Dirty burning powder will accentuate the problem, surface irregularities will not always lead to a carbon ring but can also lead to variance in the measurements at that point and irregular gas flow and bullet motion at that point. So in my experience, looking down a cleaned bore is fundamental to problem diagnosis in a chronically poorly shooting rifle, so the sooner it is done the sooner the problem can be diagnosed and dealt with.</p></blockquote><p></p>
[QUOTE="nralifer, post: 2710225, member: 94556"] The reason I keep emphasizing the importance of bore scoping is that it is fundamental to diagnosing a problem. When simple measures don't correct the problem then you need to LOOK for a structural problem. Looking is not a panacea. One thing that will not be seen on bore scoping is a poor alignment of the chamber to the center line of the bore. Carbon rings are not an inevitable fact of life. I have some 30 rifles that I don’t clean often. I try to use powders that burn clean. I clean them usually about after 100 shots or if they quit shooting otherwise good loads poorly. A factor that favors carbon ring formation is turbulent flow of gas across a surface irregularly causing a swirling of the gas at that point. Bore scoping almost always will show this up. Dirty burning powder will accentuate the problem, surface irregularities will not always lead to a carbon ring but can also lead to variance in the measurements at that point and irregular gas flow and bullet motion at that point. So in my experience, looking down a cleaned bore is fundamental to problem diagnosis in a chronically poorly shooting rifle, so the sooner it is done the sooner the problem can be diagnosed and dealt with. [/QUOTE]
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6.5 PRC issues
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