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Rifles, Reloading, Optics, Equipment
Reloading
do you need to start over with load after neck turning?
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<blockquote data-quote="jarnold37" data-source="post: 2072035" data-attributes="member: 29241"><p>There may be a small difference in velocity after neck turning, depending if using bushing sizing die or button sizing die. If thinning the neck by .001 there will be less neck tension unless you compensate with smaller bushing. Different neck tension can cause different velocities. Before realizing the need to anneal brass, I would occassionally have one cartridge that would produce very high pressure. If necks reach the point of splitting, there obviously remains little or no elasticity , or no ability to expand. It seems maybe like straining at a gnat but swallowing a camel. Turning necks will possibly make a little difference in neck tension, but nothing compared to brass hardening. Thinking back, I realized that my best accuracy seemed to have been with new brass. With squeaking of the button when sizing, and the difficulty of pulling some bullets in cases that had been resized several times, and I realized the need for annealing and how quickly necks work harden, which tends to harm accuracy.</p></blockquote><p></p>
[QUOTE="jarnold37, post: 2072035, member: 29241"] There may be a small difference in velocity after neck turning, depending if using bushing sizing die or button sizing die. If thinning the neck by .001 there will be less neck tension unless you compensate with smaller bushing. Different neck tension can cause different velocities. Before realizing the need to anneal brass, I would occassionally have one cartridge that would produce very high pressure. If necks reach the point of splitting, there obviously remains little or no elasticity , or no ability to expand. It seems maybe like straining at a gnat but swallowing a camel. Turning necks will possibly make a little difference in neck tension, but nothing compared to brass hardening. Thinking back, I realized that my best accuracy seemed to have been with new brass. With squeaking of the button when sizing, and the difficulty of pulling some bullets in cases that had been resized several times, and I realized the need for annealing and how quickly necks work harden, which tends to harm accuracy. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
do you need to start over with load after neck turning?
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