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Rifles, Reloading, Optics, Equipment
Reloading
Redding neck sizing problem?
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<blockquote data-quote="Bart B" data-source="post: 801670" data-attributes="member: 5302"><p>While excellent accuracy's been had with Redding's full bushing dies resizing bottleneck cases that headspace on their shoulders, I think the reason they're made to size only about 3/4ths of a fired case neck is Redding felt that was the most popular way reloaders used. In my opinion, that's based on the popular belief that loaded rounds rest in the bottom of the chamber when fired. Furthermore, the belief is if the case neck next to the shoulder's not sized down, that will help center the case neck better in the chamber neck as that round rests in the bottom of the chamber; the case neck near the shoulder will rest on the bottom of the chamber neck and that puts the bullet closer to perfect alignment with the bore than if it was sized down all the way to the shoulder.</p><p></p><p>In my measurements of how such bottleneck cases fit the chamber when fired, they don't fit that way at all. The case shoulder centers on the chamber shoulder and the case neck floats clear of the chamber neck. If the case neck's not centered on the case shoulder, it will not be centered in the chamber neck. So your sizing die had better well center the case neck on the case shoulder.</p></blockquote><p></p>
[QUOTE="Bart B, post: 801670, member: 5302"] While excellent accuracy's been had with Redding's full bushing dies resizing bottleneck cases that headspace on their shoulders, I think the reason they're made to size only about 3/4ths of a fired case neck is Redding felt that was the most popular way reloaders used. In my opinion, that's based on the popular belief that loaded rounds rest in the bottom of the chamber when fired. Furthermore, the belief is if the case neck next to the shoulder's not sized down, that will help center the case neck better in the chamber neck as that round rests in the bottom of the chamber; the case neck near the shoulder will rest on the bottom of the chamber neck and that puts the bullet closer to perfect alignment with the bore than if it was sized down all the way to the shoulder. In my measurements of how such bottleneck cases fit the chamber when fired, they don't fit that way at all. The case shoulder centers on the chamber shoulder and the case neck floats clear of the chamber neck. If the case neck's not centered on the case shoulder, it will not be centered in the chamber neck. So your sizing die had better well center the case neck on the case shoulder. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Redding neck sizing problem?
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