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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
New rifle cleaning
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<blockquote data-quote="25WSM" data-source="post: 1919903" data-attributes="member: 38048"><p>Manufacturers don't clean the barrels before they pack them up and ship them out. The most copper your going to get in your barrel is the first few shots. Tooling like reamers don't like to cut on an interrupted cut like the rifling. So the edges of the rifling on the throat have burrs on the edges. You can't really sand them out but a few bullets down the bore get those burrs smoothed out. But the burrs cut the jacket material and it sticks in the bore. I think the first 5 shots are some of the most important shots on a barrel. Clean real good between them because if there is copper on a rough spot it will not smooth out with more shots unless cleaned. The copper in your barrel is like a lube of sorts and you need the bullets hitting bare metal to help it break in. But I know plenty of benchrest guys who shoot them like they stole them and they are good shooters. And their barrels seem to be just fine with no break in at all. I do 20 break in shots. I clean between the first 5 then between each 3 for 5 groups. Then I just clean it when accuacy drops off. If accuracy drops of at 50 shots I will clean before 50 shot from then on. If a relay is going to put me past the 50 I clean regardless of how many is on it as to not exceed 50. All barrels behave different as to how many it likes. One of my barrels shoots better after 40 rounds are on it and quits when it has 80. So I do alot of practice with that barrel to get the 40 back on it before a match. My big game rifles get cleaned after season is over. They get shot some before season and left dirty throughout the season. Basically your barrel will tell you it wants to be cleaned. </p><p>Shep</p></blockquote><p></p>
[QUOTE="25WSM, post: 1919903, member: 38048"] Manufacturers don't clean the barrels before they pack them up and ship them out. The most copper your going to get in your barrel is the first few shots. Tooling like reamers don't like to cut on an interrupted cut like the rifling. So the edges of the rifling on the throat have burrs on the edges. You can't really sand them out but a few bullets down the bore get those burrs smoothed out. But the burrs cut the jacket material and it sticks in the bore. I think the first 5 shots are some of the most important shots on a barrel. Clean real good between them because if there is copper on a rough spot it will not smooth out with more shots unless cleaned. The copper in your barrel is like a lube of sorts and you need the bullets hitting bare metal to help it break in. But I know plenty of benchrest guys who shoot them like they stole them and they are good shooters. And their barrels seem to be just fine with no break in at all. I do 20 break in shots. I clean between the first 5 then between each 3 for 5 groups. Then I just clean it when accuacy drops off. If accuracy drops of at 50 shots I will clean before 50 shot from then on. If a relay is going to put me past the 50 I clean regardless of how many is on it as to not exceed 50. All barrels behave different as to how many it likes. One of my barrels shoots better after 40 rounds are on it and quits when it has 80. So I do alot of practice with that barrel to get the 40 back on it before a match. My big game rifles get cleaned after season is over. They get shot some before season and left dirty throughout the season. Basically your barrel will tell you it wants to be cleaned. Shep [/QUOTE]
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New rifle cleaning
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