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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
A slightly different question on breaking in a BBL
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<blockquote data-quote="4ked Horn" data-source="post: 89520" data-attributes="member: 11"><p>Thank you all for the time you took to respond. However the answers given don't quite mesh with what I know about breaking in a bbl. (Excepting jro45 who posted as I was typing this response.</p><p></p><p>I am not diminishing the responses given. I am simply discussing why I dont think we are all on the same page. (I may learn that my page is the wrong page.)</p><p></p><p> [ QUOTE ]</p><p> My line of thinking when breaking in a rifle is to clean until you get no copper left in the barrel. </p><p></p><p>[/ QUOTE ] </p><p></p><p>I believe breaking in a bbl is to reduce the ammount of copper that is abraded as the bullet passes thereby making cleaning easier. Shooting does not remove copper. It leaves copper as it rips the rough steel ridges left by the machining process. That is why it must be cleaned frequently durring the process. Eventually you end up with a smooth barrel that is easy to clean also.</p><p></p><p>I wonder if shooting a reduced load will remove the ridges without pressing abraded copper into the remaining pores as hard which would make the cleaning between shots easier.</p><p></p><p> [ QUOTE ]</p><p> To me only a factory or lower quailty barrel would need such "breaking in" </p><p></p><p>[/ QUOTE ] </p><p></p><p>As stated in my question, that is exactly what I am starting with.</p><p></p><p> [ QUOTE ]</p><p> IF breaking in a barrel is super heating the transverse ridges left by the reamer in the throat area. And then these ridges are "smoothed" by the powder and expanding gases, </p><p></p><p>[/ QUOTE ]</p><p></p><p>It is my understanding that this is "throat erosion" and that is not desired. Chamber polishing should help that part of the bbl. As I know it, breaking in a bbl smooths the bore and has little to do with the throat and the leede of the barrel.</p></blockquote><p></p>
[QUOTE="4ked Horn, post: 89520, member: 11"] Thank you all for the time you took to respond. However the answers given don't quite mesh with what I know about breaking in a bbl. (Excepting jro45 who posted as I was typing this response. I am not diminishing the responses given. I am simply discussing why I dont think we are all on the same page. (I may learn that my page is the wrong page.) [ QUOTE ] My line of thinking when breaking in a rifle is to clean until you get no copper left in the barrel. [/ QUOTE ] I believe breaking in a bbl is to reduce the ammount of copper that is abraded as the bullet passes thereby making cleaning easier. Shooting does not remove copper. It leaves copper as it rips the rough steel ridges left by the machining process. That is why it must be cleaned frequently durring the process. Eventually you end up with a smooth barrel that is easy to clean also. I wonder if shooting a reduced load will remove the ridges without pressing abraded copper into the remaining pores as hard which would make the cleaning between shots easier. [ QUOTE ] To me only a factory or lower quailty barrel would need such "breaking in" [/ QUOTE ] As stated in my question, that is exactly what I am starting with. [ QUOTE ] IF breaking in a barrel is super heating the transverse ridges left by the reamer in the throat area. And then these ridges are "smoothed" by the powder and expanding gases, [/ QUOTE ] It is my understanding that this is "throat erosion" and that is not desired. Chamber polishing should help that part of the bbl. As I know it, breaking in a bbl smooths the bore and has little to do with the throat and the leede of the barrel. [/QUOTE]
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A slightly different question on breaking in a BBL
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