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Rifles, Reloading, Optics, Equipment
Reloading
What causes this?
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<blockquote data-quote="Black Hat" data-source="post: 3047417" data-attributes="member: 109036"><p>I would not FLS, just bump the shoulder and part size the necks.</p><p></p><p>You are moving too much brass around when full length sizing, and it has to go somewhere (donut), it can also be the thicker brass in the shoulder moving up into the neck shoulder region.</p><p></p><p>Being an AI chamber there is already alot brass movement occurring on the first firing, I would do minimal sizing afterwards then anneal the cases.</p><p></p><p>I would also have your new barrel chamber reamed with a throat long enough to seat the projectile out away from the donut, then you can ignore it.</p></blockquote><p></p>
[QUOTE="Black Hat, post: 3047417, member: 109036"] I would not FLS, just bump the shoulder and part size the necks. You are moving too much brass around when full length sizing, and it has to go somewhere (donut), it can also be the thicker brass in the shoulder moving up into the neck shoulder region. Being an AI chamber there is already alot brass movement occurring on the first firing, I would do minimal sizing afterwards then anneal the cases. I would also have your new barrel chamber reamed with a throat long enough to seat the projectile out away from the donut, then you can ignore it. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
What causes this?
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