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The Basics, Starting Out
Question: Reamer Dimensions vs Chamber Dimensions vs Case Dimensions
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<blockquote data-quote="Mike Matteson" data-source="post: 3055252" data-attributes="member: 101791"><p>INTERESTING! I have listen to Erik on lands. He did note that as his groups open up he increase his length. He wouldn't set all his bullets to a set demension, by leaving them long and adjust as things changed. </p><p>That was one of the reason I started to purchase my reamers instead having the smith use his. The other is I want my neck area inside the chamber tighter than what factory builds them at. </p><p>The other is I was shooting a 308NM chamber rifle. Cases were starting to separate in about 3 firing. So I change out to a neck sizing die in a 300WM. It only sized about 2/3 to 3/4 of the neck in the 308NM. It stopped the case separation and improved the grouping. The case neck were cut for thickness so I feel the bullets were lined up with the lands.</p></blockquote><p></p>
[QUOTE="Mike Matteson, post: 3055252, member: 101791"] INTERESTING! I have listen to Erik on lands. He did note that as his groups open up he increase his length. He wouldn't set all his bullets to a set demension, by leaving them long and adjust as things changed. That was one of the reason I started to purchase my reamers instead having the smith use his. The other is I want my neck area inside the chamber tighter than what factory builds them at. The other is I was shooting a 308NM chamber rifle. Cases were starting to separate in about 3 firing. So I change out to a neck sizing die in a 300WM. It only sized about 2/3 to 3/4 of the neck in the 308NM. It stopped the case separation and improved the grouping. The case neck were cut for thickness so I feel the bullets were lined up with the lands. [/QUOTE]
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The Basics, Starting Out
Question: Reamer Dimensions vs Chamber Dimensions vs Case Dimensions
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