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Red Cent
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Lee Collet Die Set
Jun 3rd, 2018 at 9:56pm
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Since they don't make 'em for the 38-55, what can I use. Really was impressed that so many use them and they are a LEE!! Apparently they work well.
  

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Cat_Whisperer
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Mike Echo Oscar Whiskey

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Re: Lee Collet Die Set
Reply #1 - Jun 3rd, 2018 at 10:01pm
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Red Cent wrote on Jun 3rd, 2018 at 9:56pm:
Since they don't make 'em for the 38-55, what can I use. Really was impressed that so many use them and they are a LEE!! Apparently they work well.


38-55 and 375 Win are NEARLY the same.
  

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notlwonk
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Re: Lee Collet Die Set
Reply #2 - Jun 4th, 2018 at 7:48am
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Get a 30-30 collet and open it up on a lathe to 38-55 dia.
  
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Red Cent
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Re: Lee Collet Die Set
Reply #3 - Jun 4th, 2018 at 5:48pm
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OK, senior moment and I am getting confused.
As I understand it,  the die neck sizes and a collet squeezes the case neck against a precision mandrel for a perfect fit with minimum run-out. I believe i read that the neck will be more uniform after the operation.
I have been reading remarks by MikeG on Beartooth bullets. He modifies a Lyman M Die. Wouldn't that be a simple expander mandrell without the collet?

Do some of you simply neck size and use a mandrel in a separate operation to expand the neck?







« Last Edit: Jun 4th, 2018 at 6:00pm by Red Cent »  

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Red Cent
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Re: Lee Collet Die Set
Reply #4 - Jun 4th, 2018 at 6:11pm
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Cat Whisperer, my C Sharps has a .378 land and a .376 groove. To realize .001/.002 tension on my bullet, one cannot do anything to the 375 die. I think.
  

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Mike Echo Oscar Whiskey

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Re: Lee Collet Die Set
Reply #5 - Jun 4th, 2018 at 6:42pm
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Red Cent wrote on Jun 4th, 2018 at 5:48pm:
OK, ...

Do some of you simply neck size and use a mandrel in a separate operation to expand the neck?



Yes.  I use the Wilson setup.  AND I make my  own mandrels (of 3/8 or 1/2" CRS lathe turned) that have two diameters - one that gives me .002" ID smaller than the bullet and a short section that is .001 to .002 larger than the bullet for starting it.  Takes just a touch to bring it back when the bullet is seated.

later ones that I've made also will have a slight area that bells the brass.






  

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Red Cent
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Re: Lee Collet Die Set
Reply #6 - Jun 4th, 2018 at 11:14pm
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"Yes.  I use the Wilson setup."

Please elaborate.
  

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Red Cent
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Re: Lee Collet Die Set
Reply #7 - Jun 4th, 2018 at 11:29pm
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OK. Looked at some "Wilson" products. They do not use a mandrel. Did you add the step? They show using the bushings. I have more often read the mandrel works better than the busing.
I am afraid ignorance abounds.
  

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Mike Echo Oscar Whiskey

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Re: Lee Collet Die Set
Reply #8 - Jun 5th, 2018 at 9:00am
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Red Cent wrote on Jun 4th, 2018 at 11:14pm:
"Yes.  I use the Wilson setup."

Please elaborate.


Pix tonight (after work).
  

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rgchristensen
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Re: Lee Collet Die Set
Reply #9 - Jun 5th, 2018 at 10:17am
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    As everyone says, the mandrels and collets are easy to modify to get whatever neck size and shape you want/need.

CHRIS
RGChristensen
  
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marlinguy
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Re: Lee Collet Die Set
Reply #10 - Jun 5th, 2018 at 11:32am
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I use my Lyman M dies to expand necks on cases and also to bell necks on two die sets that don't include a belling die. It's worked great for my loading needs. I buy expanders from Lyman and turn them down to the exact diameter I want.
  

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MartiniBelgian
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Re: Lee Collet Die Set
Reply #11 - Jun 5th, 2018 at 12:38pm
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The idea behind the Lee collet die is to reduce case lengthening by sizing and expanding - which is where the collet enters:  it presses the neck against the mandrel radially, which reduces any 'pulling' forces on the neck/case.  So using custom bushings / expanders does NOT do the same.    And in my limted experience, they work.  But of course are most useful in modern, high-pressure cartridges.
  
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Re: Lee Collet Die Set
Reply #12 - Jun 5th, 2018 at 4:56pm
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I love these Lee collet dies as you don't have to lube the cases and clean it off afterwards.
No working of the brass as in other types of dies.
Lee will make you dies on special order, just send your case and the bullet you intend to use.
  
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CW
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Re: Lee Collet Die Set
Reply #13 - Jun 5th, 2018 at 5:02pm
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I have a 38-55 Lee collet die set with two mandrels. One for .376" bullets and one for 0.380" bullets.  Ask them. See if they will make a set for you.
  
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Cat_Whisperer
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Mike Echo Oscar Whiskey

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Re: Lee Collet Die Set
Reply #14 - Jun 5th, 2018 at 9:11pm
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Cat_Whisperer wrote on Jun 5th, 2018 at 9:00am:
Red Cent wrote on Jun 4th, 2018 at 11:14pm:
"Yes.  I use the Wilson setup."

Please elaborate.


Pix tonight (after work).


Oops.  SINCLAIR not Wilson.

L-R
7/8-14 housing and my tapered expander
.452 2 diameter expander
.458 2 diameter expander
.378 2 diameter expander
store bought Sinclair 22 and 25 cal expanders
another 7/8-14 housing (note both use 3/8" dia shanks)
  

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