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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
So...Breaking in New Barrel Is a Scam?
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<blockquote data-quote="hammertyme" data-source="post: 332461" data-attributes="member: 12863"><p>Many years ago I traded a very good friend for his European made mauser in 375 H&H. Beauty and Elogance were amazing. For years this gun was his elk and moose gun until one day it went from one inch groups to 5 inch groups.</p><p> </p><p>Note: He never ever cleaned a gun. I got the gun because it was the only 7 pound 375 H&H I had ever seen. I was going to replace the barrel.</p><p> </p><p> </p><p>For the following week after I got the gun I alternated every day between copper solvent and bore cleaner. For twenty years of never cleaning the barrel there were layers upon layers of copper then burnt black carbon. Then I got down to the last layer of copper which was instead of layered was mixed with carbon. It would not clean period. I plugged the muzzle end of the barrel,stood the barreled action on the muzzle end and filled the barrel with WD 40 and left the gun standing in the corner this way for a week. After seven days I pulled the plug and went to work starting with nylon brush and then going to brass brush. Guess I thought I was going to restore the barrel. The carbon was gone leaving long coper colored sheens in the bore. Copper solvent wasn't getting it done so straight ammonia was used for a ten minute soak. ( That blue on your patch after using copper remover is the amonia chemical reaction with copper) Caution: Ammonia etches steel!!!</p><p> </p><p>I got all of everything out of the barrel and inspected very closely the bare metal. Whomever made the barrel did not understand the principle of lapping a bore. It looked like a pitted gravel road of tool marks. In my opinion this barrel should never have been put on a gun but its an example of shooting and depositing material. Over the years of filling and smoothing, it got to the point the barrels bore became undersized to the point that he had to drop his powder charge because of loose primers from over pressure.</p><p> </p><p>The auto industry breakin period says it best. Don't run your new vehicles over a certain speed which interprets to RPM's for a period of time. Change oil according to instructions to get out the shaved material during this seating period then one is good to go.</p><p> </p><p>Neal</p></blockquote><p></p>
[QUOTE="hammertyme, post: 332461, member: 12863"] Many years ago I traded a very good friend for his European made mauser in 375 H&H. Beauty and Elogance were amazing. For years this gun was his elk and moose gun until one day it went from one inch groups to 5 inch groups. Note: He never ever cleaned a gun. I got the gun because it was the only 7 pound 375 H&H I had ever seen. I was going to replace the barrel. For the following week after I got the gun I alternated every day between copper solvent and bore cleaner. For twenty years of never cleaning the barrel there were layers upon layers of copper then burnt black carbon. Then I got down to the last layer of copper which was instead of layered was mixed with carbon. It would not clean period. I plugged the muzzle end of the barrel,stood the barreled action on the muzzle end and filled the barrel with WD 40 and left the gun standing in the corner this way for a week. After seven days I pulled the plug and went to work starting with nylon brush and then going to brass brush. Guess I thought I was going to restore the barrel. The carbon was gone leaving long coper colored sheens in the bore. Copper solvent wasn't getting it done so straight ammonia was used for a ten minute soak. ( That blue on your patch after using copper remover is the amonia chemical reaction with copper) Caution: Ammonia etches steel!!! I got all of everything out of the barrel and inspected very closely the bare metal. Whomever made the barrel did not understand the principle of lapping a bore. It looked like a pitted gravel road of tool marks. In my opinion this barrel should never have been put on a gun but its an example of shooting and depositing material. Over the years of filling and smoothing, it got to the point the barrels bore became undersized to the point that he had to drop his powder charge because of loose primers from over pressure. The auto industry breakin period says it best. Don't run your new vehicles over a certain speed which interprets to RPM's for a period of time. Change oil according to instructions to get out the shaved material during this seating period then one is good to go. Neal [/QUOTE]
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So...Breaking in New Barrel Is a Scam?
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