Lee Collet Die Problem

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Lee Collet Die Problem

Post by Stix » 11 Oct 2019, 11:15 pm

So...

I finally got around to getting my 22-250 collet die all sorted & happening...

But...couldnt pull it apart... :unknown:

Ended up having to punch the insert out... :crazy:

Turns out, the insert is so dam tight it wont go back in either--well, not without a good bit of persuasion with a hammer & punch of some sort... :wtf:

Is this normal...?

All clips on the choob show the internals just fall out...but the one ive got is too bloody tight to get in & out without extreme force...FFS...!!! :unknown: :evil:

Anyone have any ideas... :unknown:

Guess im not shooting tomorrow ffs...!!!

Why the fuk is everything i buy these days a fukn peice of sh1t... :evil: :evil: :evil:
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Re: Lee Collet Die Problem

Post by Cooper » 12 Oct 2019, 8:06 am

The first thing I'd try is the insert out of another Lee Collet die (if you have one?) that way it should be pretty easy to see if it is a problem with the inset or the body of the die. But yeah they should pretty much just fall out when you unscrew to cap.
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Re: Lee Collet Die Problem

Post by Stix » 12 Oct 2019, 9:35 am

Thanks Cooper...
I dont have another on hand...

Once its in there, it seems to be able to move but getting it past the thread is proving a right PITA...!!...

So ill leave it in there for now...
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Re: Lee Collet Die Problem

Post by Apollo » 12 Oct 2019, 10:43 am

Was the Die new or secondhand..??

Have you or anyone else put the die in a vice or similar to grip the Die in an attempt to undo a tight top cap.. ??

Is the cap easy to undo and tighten..?? Is the top perfectly round.. ??

The Insert and Collet should just fall out the top past the thread.
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Re: Lee Collet Die Problem

Post by marksman » 12 Oct 2019, 11:01 am

Apollo wrote:Was the Die new or secondhand..??

Have you or anyone else put the die in a vice or similar to grip the Die in an attempt to undo a tight top cap.. ??

Is the cap easy to undo and tighten..?? Is the top perfectly round.. ??

The Insert and Collet should just fall out the top past the thread.



+1 :thumbsup:
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Re: Lee Collet Die Problem

Post by bladeracer » 12 Oct 2019, 11:33 am

Apollo wrote:Was the Die new or secondhand..??

Have you or anyone else put the die in a vice or similar to grip the Die in an attempt to undo a tight top cap.. ??

Is the cap easy to undo and tighten..?? Is the top perfectly round.. ??

The Insert and Collet should just fall out the top past the thread.


Good point, I've seen a similar problem with motorcycle fork legs that have been locked in a vice to loosen the fork caps.
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Re: Lee Collet Die Problem

Post by Stix » 12 Oct 2019, 1:52 pm

Ok...it was new...

Ive sized one batch with it, using Lee's instructions...which are clearly wrong--or so badly written they give a totally wrong interpretation for correct use.

Hasnt been bent out of round in a vice...
Body is visually round...
Cap is easy to thread in or out...which confirms body is round...

I wonder if its made of a different material-possibly softer...(the insert)

I also wonder if excessive pressure on the press has compressed the insert causing the bottom section to flare out radially, making it a squillion'th larger diameter than the inside of the thread... :unknown:

Unfortunately its too big for the chuck in a drill, & i dont have a lathe--or i could 'sand' down this section with some wet-n-dry...

The bloody collet is surface rusted too... :unknown: ...bloody hell...

This is the section that is too large & binds on the thread...
2019-10-12 12.53.47.jpg
2019-10-12 12.53.47.jpg (136.6 KiB) Viewed 193 times


Its in the die & appears to be working for now...but ill have to get it sorted so i can lube the bits...
Last edited by Stix on 12 Oct 2019, 2:10 pm, edited 1 time in total.
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Re: Lee Collet Die Problem

Post by Ziad » 12 Oct 2019, 1:56 pm

Apply some lube on it mate the collet fingers can jam with the slieve... and damage cases

When new one of my dies was like you describe very tight to get on and out... eventually wore in good and lube helps
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Re: Lee Collet Die Problem

Post by sungazer » 12 Oct 2019, 7:19 pm

Which bit is sticking the top outer part or the mandrel down the centre in that top outer part. I have on one or two occasions just given the bottom part that does the squeezing a very light wet and dry on the inside of the hole and down the slits. Using like 1000 wet and dry.

Be careful if you do any polishing of the mandrel very easy to take off a few thou which will result in too much sizing and neck tension.
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Re: Lee Collet Die Problem

Post by Stix » 12 Oct 2019, 7:58 pm

sungazer wrote:Which bit is sticking the top outer part or the mandrel down the centre in that top outer part. I have on one or two occasions just given the bottom part that does the squeezing a very light wet and dry on the inside of the hole and down the slits. Using like 1000 wet and dry.

Be careful if you do any polishing of the mandrel very easy to take off a few thou which will result in too much sizing and neck tension.

The outside of the insert..as ive pictured and (badly) circled, is too wide to come out past the thread for the cap...

The mandrel slides in & out easily...

The insert has play while inside the body--its just getting it out that is the problem...

Ive punched it in & out twice now, & appear to have done no damage to the thread as the cap still screws in & out quite easily with no notable binding...

Ill have to punch it out again & lube the collet though...

Thanks for the warning on the mandrel sungazer- :) :thumbsup: -ive never done that before & wondered how quick & easy it is to remove too much.

For now, ive no choice but to use it as is...but ill order another mandrel & when i get it, ill polish this one with some lapping compound or autosol/JB abrasive...
:drinks:

Edit---its only the area circled, up to the slight 'indent' on the sleeve, that is binding on the thread...the upper section of it--where it increases in diameter again, slips past the thread without binding---so if i put it in upside down, it goes in fine until that lower section reaches the thread...
(Ive tried to explain that as best i can...)
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Re: Lee Collet Die Problem

Post by sungazer » 12 Oct 2019, 8:46 pm

Sounds like you've got a bit of a strange one. All mine drop in and out without any problems. Only issue I have had and it was more to be picky was to give the fingers a little polish. Sounds like yours is still operational and not going to cause loading problems. You do want that mandrel to have a little play so it is all making concentric ammo.
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Re: Lee Collet Die Problem

Post by in2anity » 13 Oct 2019, 9:45 am

sungazer wrote:Sounds like you've got a bit of a strange one. All mine drop in and out without any problems. Only issue I have had and it was more to be picky was to give the fingers a little polish. Sounds like yours is still operational and not going to cause loading problems. You do want that mandrel to have a little play so it is all making concentric ammo.

+1
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Re: Lee Collet Die Problem

Post by Stix » 13 Oct 2019, 11:08 am

in2anity wrote:
sungazer wrote:Sounds like you've got a bit of a strange one. All mine drop in and out without any problems. Only issue I have had and it was more to be picky was to give the fingers a little polish. Sounds like yours is still operational and not going to cause loading problems. You do want that mandrel to have a little play so it is all making concentric ammo.

+1

Yes the mandrel & insert both have a little play independant of each other...

Cant find the bloomin receipt...dam...
Ill ask the store if i can get a replacement die cos its obviously not right...& they will remember me getting it so will hopefully find copy of sale on their POS system...
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Re: Lee Collet Die Problem

Post by Stix » 18 Oct 2019, 7:25 pm

Hey guys...just a quickie...gotta load some tonight--well now...

How do you go about ideal neck tension using a lee collet, but not neck turning...

Ive tested a couple of cases--one where i can just push the bullet in by hand---& another the die was only an eighth (1/8) turn down from that one in the press, which is not possible to push bullet in by hand...

Anyone have any idea what one eighth turn might equate to in terms of 0.000" in neck tension...?...is that too much--as in only add 1/16th turn...?

Ya'all get me & my silly question......?
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Re: Lee Collet Die Problem

Post by Stix » 18 Oct 2019, 8:21 pm

Ok...yes i get that the neck tension is largely governed by the diameter of the mandrel...

But setting the die up & giving it that extra 1/8th turn increases the tension...so im asking how others have it set--at around that mark or with more tension...?

Figured its worth asking anyway...as silly a question as it may seeem....
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Re: Lee Collet Die Problem

Post by Ziad » 19 Oct 2019, 8:56 am

I am surprised no one has answered yet mate... maybe weekend.

I follow the instructions and it works fine.
http://benchrest.com/showthread.php?498 ... Adjustment
Look at post 3
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Re: Lee Collet Die Problem

Post by sungazer » 19 Oct 2019, 6:32 pm

Stix it doesn't matter how much you screw the die in. The mandrel is the determining factor of neck tension. Apart from the elasticity of the brass. A well annealed piece of brass will not spring back it will resize nicely. After each use the brass will not size as much resulting in less neck tension.
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Re: Lee Collet Die Problem

Post by Stix » 19 Oct 2019, 7:30 pm

Thanks guys...

Sungazer---i obviously cant get it in my head how this die works then...

What ive said, relates directly to this line...
Once the die is near the correct sizing position it takes very little movement of the die to achieve changes in neck seating tension ....whicj ive copied & pasted directly out of the link Ziad has posted...
This is the 27th line down, with this line being number 1..."Using The Lee Collet Die."

These are the instructions ive used to set up the die...

Ive found the point at which the die starts to size the neck/make changes to the neck...ive screwed the die in 1/16th a turn from the point ive said above, & seems to give just enough tension to stop me pushing a bullet in at all by hand...

So while i get that the mandrel is what determines neck tension, why do the instructions posted above state that minute changes in die depth (in press) will change neck tension, & why do i get this same result... :unknown:

Im obviously not getting something here... :unknown:
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