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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
New Barrel Break-in And Cleaning Methods
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<blockquote data-quote="J E Custom" data-source="post: 1734812" data-attributes="member: 2736"><p>The bore scope requires a lot of interpretation and experience to see/know where the barrel is. I have looked at many barrels with my bore scope and the difference in a never fired, and broke in barrel in is almost impossible to see unless it is a poor or factory barrel. With these barrels, 40 or more shots are needed to show any improvements.</p><p></p><p>It may also be a good way to evaluate where in life the barrel is if you chronograph</p><p>the first shot and keep it in your loading notes. And occasionally chronograph the same load to see if there are any noticeable changes.</p><p></p><p>Normally while brake in is being performed, you can tell the difference by feel and the amount of fouling deposited after firing each shot. But the Increase in velocity should be an indication of the best condition of the bore, and when the velocity stops gaining and starts bouncing up and down,it should indicate that the difference in velocity is the load itself and not the barrel anymore.</p><p></p><p>Using the chronograph just seemed like a good way to see if the brake in did anything besides improving/reducing the fouling. It also has shone when the process was no longer a benefit and velocity has peaked.</p><p></p><p>I have yet to do a factory barrel, But I would think I would be a good indicator of the quality of the barrel if the spread was not that much for the first 10+ shots and it would take many more shots for it to reach it's peak velocity Or never really improve that much.</p><p></p><p>Just another way to understand the pros and cons of brake in in my opinion.</p><p></p><p>J E CUSTOM</p></blockquote><p></p>
[QUOTE="J E Custom, post: 1734812, member: 2736"] The bore scope requires a lot of interpretation and experience to see/know where the barrel is. I have looked at many barrels with my bore scope and the difference in a never fired, and broke in barrel in is almost impossible to see unless it is a poor or factory barrel. With these barrels, 40 or more shots are needed to show any improvements. It may also be a good way to evaluate where in life the barrel is if you chronograph the first shot and keep it in your loading notes. And occasionally chronograph the same load to see if there are any noticeable changes. Normally while brake in is being performed, you can tell the difference by feel and the amount of fouling deposited after firing each shot. But the Increase in velocity should be an indication of the best condition of the bore, and when the velocity stops gaining and starts bouncing up and down,it should indicate that the difference in velocity is the load itself and not the barrel anymore. Using the chronograph just seemed like a good way to see if the brake in did anything besides improving/reducing the fouling. It also has shone when the process was no longer a benefit and velocity has peaked. I have yet to do a factory barrel, But I would think I would be a good indicator of the quality of the barrel if the spread was not that much for the first 10+ shots and it would take many more shots for it to reach it's peak velocity Or never really improve that much. Just another way to understand the pros and cons of brake in in my opinion. J E CUSTOM [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
New Barrel Break-in And Cleaning Methods
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