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Hunting
The Basics, Starting Out
Copper and powder questions???
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<blockquote data-quote="Fisher T&amp;C" data-source="post: 2578569" data-attributes="member: 123543"><p>I think over-cleaning is an issue when chasing accuracy. What the bench rest crowd does can border along the lines of superstition. In the context of a field rifle; some copper should be left in the bore to maintain accuracy, if you're cleaning after every shooting session and going into the next one with a clean bore; you'll be chasing your zero. Every barrel needs to foul to a certain point to maintain a consistent point of impact and then it should be left alone for 100-200 rounds. As far as barrel break in goes, a barrel is actually broken in after 150-200 rounds; at which point it will "speed up" or have an increase in velocity. When a barrel speeds up the load needs reworked. As far as a break in procedure; cleaning in between the first 10 shots is the most anyone should do and I don't believe it to be necessary. Several of my customers and other accomplished shooters will go out and shoot 200 rounds in their first range trip with a new barrel and get it sped up; then they'll start load work and building a ballistic profile. I don't have time to shoot that much in a session, so I'll do about 50 rounds per until I get the velocity to flatten out. </p><p></p><p>I use Hoppes #9 and Denatured Alcohol, Hoppes has a very small amount of ammonia which removes loose copper. I then use the denatured alcohol to degrease the bore of any solvent left behind, for long term storage; a thin coat of oil like kroil, free all or rem oil is ideal for rust prevention. After a routine cleaning it should only take one to two fouling shots to get back to zero. If you are deep cleaning every time it could take up to 12 shots before the barrel settles back into a consistent point of impact. I would never go into a hunt or match with a fresh clean bore.</p></blockquote><p></p>
[QUOTE="Fisher T&C, post: 2578569, member: 123543"] I think over-cleaning is an issue when chasing accuracy. What the bench rest crowd does can border along the lines of superstition. In the context of a field rifle; some copper should be left in the bore to maintain accuracy, if you're cleaning after every shooting session and going into the next one with a clean bore; you'll be chasing your zero. Every barrel needs to foul to a certain point to maintain a consistent point of impact and then it should be left alone for 100-200 rounds. As far as barrel break in goes, a barrel is actually broken in after 150-200 rounds; at which point it will "speed up" or have an increase in velocity. When a barrel speeds up the load needs reworked. As far as a break in procedure; cleaning in between the first 10 shots is the most anyone should do and I don't believe it to be necessary. Several of my customers and other accomplished shooters will go out and shoot 200 rounds in their first range trip with a new barrel and get it sped up; then they'll start load work and building a ballistic profile. I don't have time to shoot that much in a session, so I'll do about 50 rounds per until I get the velocity to flatten out. I use Hoppes #9 and Denatured Alcohol, Hoppes has a very small amount of ammonia which removes loose copper. I then use the denatured alcohol to degrease the bore of any solvent left behind, for long term storage; a thin coat of oil like kroil, free all or rem oil is ideal for rust prevention. After a routine cleaning it should only take one to two fouling shots to get back to zero. If you are deep cleaning every time it could take up to 12 shots before the barrel settles back into a consistent point of impact. I would never go into a hunt or match with a fresh clean bore. [/QUOTE]
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