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Rifles, Reloading, Optics, Equipment
Reloading
The reason we anneal brass cases.
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<blockquote data-quote="jarnold37" data-source="post: 2030413" data-attributes="member: 29241"><p>I wish I had learned of the necessity of annealing earlier than I did. I had a major accuracy gunsmith chamber an Ackley Imp. chambering and with new brass they were all splitting in shoulder neck area when fire forming. I notified the gunsmith and he had me to ship back to him immediately. When I got his reply, he said bad brass. I told him couldnt be that it was new brass. He assured me it was the brass. Thus started me on a quest to learn about annealing. I got in touch with an engineer at a major brass manufacturer and he said to heat til orange and quench. I then started testing the brass after a light heating. The rifle is a very accurate 1000 yr gun. I use bushing dies normally but used dies with button to determine softness of necks. When you hear squeaking as the button is being pulled up through the necks means brass is way to hard lacking elasticity. I called and read anything for info and got all kinds of different opinions. I could not get necks to stop squeaking until the necks were heated to a bright orange and quenched. If you have necks with 50 lbs neck tension due to no elasticity and a 10% variance from case to case equals to 5 lbs variance neck tension per case. If you have 5 lbs of neck tension because of elasticity and 10% variance there is only half pound variance. The goal is not softness, it is elasticity. Brass loses its elasticity or springyness very quickly, maybe even after one or two firings. I have not found any evidence of burning and ruining brass. After annealing the rifle will group .1-.2". After 5 reloadings and no annealing, group go to 1 1/2" and bigger. The proof is in the pudding (groups). Most new brass with one exception seems to "squeak" on first resize.</p></blockquote><p></p>
[QUOTE="jarnold37, post: 2030413, member: 29241"] I wish I had learned of the necessity of annealing earlier than I did. I had a major accuracy gunsmith chamber an Ackley Imp. chambering and with new brass they were all splitting in shoulder neck area when fire forming. I notified the gunsmith and he had me to ship back to him immediately. When I got his reply, he said bad brass. I told him couldnt be that it was new brass. He assured me it was the brass. Thus started me on a quest to learn about annealing. I got in touch with an engineer at a major brass manufacturer and he said to heat til orange and quench. I then started testing the brass after a light heating. The rifle is a very accurate 1000 yr gun. I use bushing dies normally but used dies with button to determine softness of necks. When you hear squeaking as the button is being pulled up through the necks means brass is way to hard lacking elasticity. I called and read anything for info and got all kinds of different opinions. I could not get necks to stop squeaking until the necks were heated to a bright orange and quenched. If you have necks with 50 lbs neck tension due to no elasticity and a 10% variance from case to case equals to 5 lbs variance neck tension per case. If you have 5 lbs of neck tension because of elasticity and 10% variance there is only half pound variance. The goal is not softness, it is elasticity. Brass loses its elasticity or springyness very quickly, maybe even after one or two firings. I have not found any evidence of burning and ruining brass. After annealing the rifle will group .1-.2". After 5 reloadings and no annealing, group go to 1 1/2" and bigger. The proof is in the pudding (groups). Most new brass with one exception seems to "squeak" on first resize. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
The reason we anneal brass cases.
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