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Rifles, Reloading, Optics, Equipment
Reloading
What could cause group outliers?
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<blockquote data-quote="Mike Matteson" data-source="post: 2750234" data-attributes="member: 101791"><p>Then you are not using a type S Redding bushing die. Because you can change the bushing out for a smaller bushing. I have several bushing for my Redding bushing dies. One of my cases has to be sized or step down 4 times to achieve the ID in the neck area I am after. From 7mm to 6mm. </p><p>Or you can get a bushing die from Redding and or bushing. Brownell, Midway and other supplies have them and bushing too. </p><p>Now what I haven't tried is bushing down to below a .002" ID and using a mandrel to expand the neck back to the .002" for neck tension. I am looking at that and will try it to see if any better grouping come from that. There has been a lot of debate on final size of the neck. Presently I stand on the side of being able to achieve my neck tension by using bushing. I do cut all my neck for thickness to start with. So the the out side of the case are even. That's using new case that never been fired. Once fired cases, that a different story. I believe I would size, and use a mandrel before cutting the necks for thickness. That way I know the uneven neck thickness are to the outside before cutting the necks to thickness. </p><p>I am still waiting on is my bullet seater die. For my 6mm/280AI chamber. The die is a blank and has to be reamed for the cartridge. The second rifle being built, I will have the blank seating die before hand. Live and learn. </p><p>The other is you have to watch for spring back too. It looks to me that you will have to watch the necks for several days to see what happening with the neck for changes.</p></blockquote><p></p>
[QUOTE="Mike Matteson, post: 2750234, member: 101791"] Then you are not using a type S Redding bushing die. Because you can change the bushing out for a smaller bushing. I have several bushing for my Redding bushing dies. One of my cases has to be sized or step down 4 times to achieve the ID in the neck area I am after. From 7mm to 6mm. Or you can get a bushing die from Redding and or bushing. Brownell, Midway and other supplies have them and bushing too. Now what I haven't tried is bushing down to below a .002" ID and using a mandrel to expand the neck back to the .002" for neck tension. I am looking at that and will try it to see if any better grouping come from that. There has been a lot of debate on final size of the neck. Presently I stand on the side of being able to achieve my neck tension by using bushing. I do cut all my neck for thickness to start with. So the the out side of the case are even. That's using new case that never been fired. Once fired cases, that a different story. I believe I would size, and use a mandrel before cutting the necks for thickness. That way I know the uneven neck thickness are to the outside before cutting the necks to thickness. I am still waiting on is my bullet seater die. For my 6mm/280AI chamber. The die is a blank and has to be reamed for the cartridge. The second rifle being built, I will have the blank seating die before hand. Live and learn. The other is you have to watch for spring back too. It looks to me that you will have to watch the necks for several days to see what happening with the neck for changes. [/QUOTE]
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Reloading
What could cause group outliers?
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