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Rifles, Reloading, Optics, Equipment
Reloading
Advice Sought: Decapping When Neck Sizing?
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<blockquote data-quote="DUCKMAN11" data-source="post: 2753701" data-attributes="member: 122313"><p>Like everyone has said.... you can decap with a neck only sizing die in 1 step. That being said.....</p><p></p><p>Hunt one time in a drizzle or dust storm and you are gonna wish you bumped the shoulder back 2thou and sized the body.</p><p></p><p>I'm not saying that neck only sizing is bad but it's not ideal in a hunting situation in my humble opinion. It's best left to benchrest style shooting on cases that all come from the same lot and have been neck turned in order to achieve constant neck tension and the best accuracy. Neck only sizing on once fired factory ammo that's not neck turned or especially in your case of fire formed 243ai brass could possibly leave you with neck tension from .001"-.007" depending on the brass make and model. The reason I know this is I've made the mistake in a 25-06AI. </p><p></p><p>The way that makes the most accurate ammo for me is using a redding type S full length sizing die and an expander mandrel die from 21st century to set final neck tension. </p><p></p><p></p><p>In my opinion having constant neck tension is the most important thing in making accurate ammo. Followed closely by seating depth. There is way more wiggle room with seating depth than neck tension. Move a bullet in or out .010" and you might not see a change..... move neck tension in or out .001" and the target and chronograph will show a difference. </p><p></p><p>There are folks on here that have forgotten more about reloading than my little brain could possibly fathom. Hopefully they chime in and shorten the learning curve.</p></blockquote><p></p>
[QUOTE="DUCKMAN11, post: 2753701, member: 122313"] Like everyone has said.... you can decap with a neck only sizing die in 1 step. That being said..... Hunt one time in a drizzle or dust storm and you are gonna wish you bumped the shoulder back 2thou and sized the body. I'm not saying that neck only sizing is bad but it's not ideal in a hunting situation in my humble opinion. It's best left to benchrest style shooting on cases that all come from the same lot and have been neck turned in order to achieve constant neck tension and the best accuracy. Neck only sizing on once fired factory ammo that's not neck turned or especially in your case of fire formed 243ai brass could possibly leave you with neck tension from .001"-.007" depending on the brass make and model. The reason I know this is I've made the mistake in a 25-06AI. The way that makes the most accurate ammo for me is using a redding type S full length sizing die and an expander mandrel die from 21st century to set final neck tension. In my opinion having constant neck tension is the most important thing in making accurate ammo. Followed closely by seating depth. There is way more wiggle room with seating depth than neck tension. Move a bullet in or out .010" and you might not see a change..... move neck tension in or out .001" and the target and chronograph will show a difference. There are folks on here that have forgotten more about reloading than my little brain could possibly fathom. Hopefully they chime in and shorten the learning curve. [/QUOTE]
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Advice Sought: Decapping When Neck Sizing?
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