quest4perfection
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When using bushing dies and any resulting bulge on the neck is below seating depth of the bullet: let's get some thoughts regarding whether you turn the bulge off from the necks...and why.
To turn or not to turn
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243winxb
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You can not neck turn fired brass sized with a bushing die.
The unsized part of the neck will expand to the chamber. It needs turning, as it centers the rounds in the chamber.
The unsized part of the neck will expand to the chamber. It needs turning, as it centers the rounds in the chamber.
Varminterror
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I'm not following? Can you expand a bit?
Offfhand
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Yeah, me too....
243winxb
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The bushing will not size all the way down to the shoulder like a full length die. The Redding type S bushing die needs the bushing to float some. But even with maximum bushing sizing, mine will not size to the shoulder. This leaves the bulge, the unsized part of the neck. The case wall thickness is the same (243 win cartridge)
Turning the bulge off would make that area of the neck thinner than the rest.
An expander should be used to expand the neck and push any irregularities to the outside , then it can be turned .
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Blue68f100
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Beside that little expanded area helps center the bullet to the chamber. Less slop...
If you choose to neck turn the cases before sizing with a bushing die, after sizing you will still have a little "bulge" below where the bushing sizes.
If you are loading for a gun with a tight necked match chamber (Such as my .262 neck 6 PPC Bench gun) you will have to neck turn so the loaded round will match the chamber.
If you want more consistency in neck thickness all the way around you will neck turn to match the thinnest part of the neck. Don't take off any more than needed for a standard chamber. Some people say neck turn to clean up 90% of the circumference of the neck, probably works just fine.
If you are loading for a gun with a tight necked match chamber (Such as my .262 neck 6 PPC Bench gun) you will have to neck turn so the loaded round will match the chamber.
If you want more consistency in neck thickness all the way around you will neck turn to match the thinnest part of the neck. Don't take off any more than needed for a standard chamber. Some people say neck turn to clean up 90% of the circumference of the neck, probably works just fine.
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Varminterror
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GOTCHA!! Yup, fully agree! I didn't immediately follow your sequence in my head.
When I'm neck turning, I either FL size or use a non-bushing neck die to kiss the shoulder, giving me a tight mandrel fit, then turn the entire neck. From there on out, I may size with a bushing neck die - but any time you're turning, you have to be sure you have the full neck to uniform dia.
Now - if you're getting a doughnut, for example, when necking up and pulling thicker shoulder brass into the neck, THEN that doughnut should get turned, but that's a different thing than the "false shoulder" type bulge around a bushing sized case neck.
"Bulges" and "doughnuts" are different things. Turn doughnuts, not bulges. Size or ignore bulges.
quest4perfection
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Future readers should pay attention here and make decisions based upon whether they or not they have a tight bore and where they are wanting to end up. Good information in the two previous posts but anyone new to reloading should understand what it truly means. Once you turn your brass you are obligated.
Tight neck?
aren't doughnuts pushed to the inside when the case is sized? how would you turn the doughnut if it is on the inside of the case?
murf
Varminterror
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Pulled back out by the expander
spitballer
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This makes imminent sense to me, and thanks to WinXB for the post, but can anyone post a picture of one of these "expanders" and suggest a retailer? Thx in advance.
Varminterror
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The expander ball/mandrel in your sizing die.
spitballer
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Oh okay I thought there was an "expanding" tool that us neck-sizers could use to get fresh brass squarely onto a pilot.
https://www.sinclairintl.com/reload...k-turning/turning-expander-mandrels/index.htm
My old K&M. More good options out there these days.
My old K&M. More good options out there these days.
243winxb
Member
https://www.sinclairintl.com/search/index.htm?k=Neck+turning+expander+pilot&ksubmit=y
1. Nect turning mandrels
2. Expander mandrels.
Different diameters from what i read. .222" vs .223"
An expander die body may be needed to hold the expander.
I see listed
1. Nect turning mandrels
2. Expander mandrels.
Different diameters from what i read. .222" vs .223"
An expander die body may be needed to hold the expander.
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Varminterror
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The RCBS neck turning system reams inside before turning outside, all in the same pass.
ETA: Not sure if I like that yet, but it’s faster on the Pro-Trim lathe than hand held with the K&N or Forster.
ETA: Not sure if I like that yet, but it’s faster on the Pro-Trim lathe than hand held with the K&N or Forster.
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quest4perfection
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yes. it was late and I was tired zzzzzzzzzzzz
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