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Rifles, Reloading, Optics, Equipment
Reloading
Accurate Case Trimmers
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<blockquote data-quote="KSAv8r" data-source="post: 2469110" data-attributes="member: 86098"><p>At a distance of 100 to 600 yards I would suggest you will see very little difference in accuracy as long as you are talking about a small amount of variance.</p><p></p><p>This opens up the debate on neck tension versus length of neck and how much of the bearing surface of the bullet is inside the neck. Maybe some of the mathematicians in our group can give us the answer to this but my experience is that it is difficult to measure how this impacts accuracy if the difference in case length is small. We all know that brass grows in length from each firing by a few thousandths of an inch. We have also seen where brass seems to grow more on one side than the other. Some people believe in trimming after each firing. Others wait until the brass has been fired 3-4 times. Both groups seem to come back with meat on the table. There is even debate among the benchrest guys on when to trim brass.</p><p></p><p>My experience is that brass grows at a different rate depending on the brand, rifle and chambering. A hotter load will grow brass faster than a more moderate load. Soft brass tends to grow faster than harder brass. For ranges from 100 to 600 yards I doubt you will see any measurable difference as long as the brass does not exceed SAMMI specs or what is recommended for your custom chamber. I would suggest the key to accuracy once a load is developed for a given rifle, is consistency in your components and reloading process. However, the largest variable in accuracy is the human factor. Shooting is a perishable skill and takes patience and lots of practice for long range accuracy out past 1000 yards.</p></blockquote><p></p>
[QUOTE="KSAv8r, post: 2469110, member: 86098"] At a distance of 100 to 600 yards I would suggest you will see very little difference in accuracy as long as you are talking about a small amount of variance. This opens up the debate on neck tension versus length of neck and how much of the bearing surface of the bullet is inside the neck. Maybe some of the mathematicians in our group can give us the answer to this but my experience is that it is difficult to measure how this impacts accuracy if the difference in case length is small. We all know that brass grows in length from each firing by a few thousandths of an inch. We have also seen where brass seems to grow more on one side than the other. Some people believe in trimming after each firing. Others wait until the brass has been fired 3-4 times. Both groups seem to come back with meat on the table. There is even debate among the benchrest guys on when to trim brass. My experience is that brass grows at a different rate depending on the brand, rifle and chambering. A hotter load will grow brass faster than a more moderate load. Soft brass tends to grow faster than harder brass. For ranges from 100 to 600 yards I doubt you will see any measurable difference as long as the brass does not exceed SAMMI specs or what is recommended for your custom chamber. I would suggest the key to accuracy once a load is developed for a given rifle, is consistency in your components and reloading process. However, the largest variable in accuracy is the human factor. Shooting is a perishable skill and takes patience and lots of practice for long range accuracy out past 1000 yards. [/QUOTE]
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Accurate Case Trimmers
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