Body die and neck collet die

[Murray Brook]

Murray, I probably learned this from you!

Nice to hear I did help someone thank you. As far as pressure on the press handle a child could easily put the pressure needed to size the case neck in this die. In fact on my press if I were to just let the press handle fall I believe there would be enough pressure to get the job done.

 

[243winxb]

As far as pressure on the press handle a child could easily put the pressure needed to size the case neck in this die. In fact on my press if I were to just let the press handle fall I believe there would be enough pressure to get the job done.

Well annealed brass?

modulus of elasticity- Cartridge Brass-
Material is 70 copper/30 zinc with trace amounts of lead & iron , called C26000. Material starts to yield at 15,000 PSI when soft (annealed) and 63,000 PSI when hard.
Material yields, but continues to get stronger up to 47,000 PSI when soft, and 76,000 PSI
when work hardened.

 

[BHP9]

My first foray with the Lee Collet Die in 6.5 Creedmore.

New Lapua cases. 6 sized and this was #7. Also the mandrel was too big.

Never again.

I'm going to the Redding.

 

[Homerange]

I had to put 25 pounds pressure, minimum, on the lever to size 243 win necks with the Lee collet, per Lee instructions.
The pressure applied to the handle needs to be the same, every time.

There is a "cam over" method? That i didnt try.

To hard on the press and this old man.

No improvement in accuracy, when compared to my Redding type S fl bushing die. Test rifle Rem 40x.

More on the subject at https://support.leeprecision.net/en/knowledgebase

The Valentine method is what you need read up on.
It's actually less effort than pulling down on the press handle when set up the Lee way as you are using the camming effect that a cam over adjustment offers.
It can be a little effort to setup correctly so you need a locking die nut or lock 2 Lee die nuts together.
See here:

Post in thread '"Lee Collet Die" Experience'

Oct 15, 2015

Try setting your die up this way:

Using The Lee Collet Die.
I started using Lee collet dies when they first came on the market and have found that they are very good for the purposes for which they were designed .
I have found that there is a lack of understanding of how to use the die properly and as a result people fail to see the advantages that the die can deliver over standard neck sizing dies.
This is not the fault of the product , it is just a lack of understanding of how the die works and what it will feel like when you operate the press correctly.
Standard dies use a neck...

• JohnKielly

• 

 

[kelbro]

The Valentine method is what you need read up on.
It's actually less effort than pulling down on the press handle when set up the Lee way as you are using the camming effect that a cam over adjustment offers.
It can be a little effort to setup correctly so you need a locking die nut or lock 2 Lee die nuts together.
See here:

Post in thread '"Lee Collet Die" Experience'

Oct 15, 2015

Try setting your die up this way:

Using The Lee Collet Die.
I started using Lee collet dies when they first came on the market and have found that they are very good for the purposes for which they were designed .
I have found that there is a lack of understanding of how to use the die properly and as a result people fail to see the advantages that the die can deliver over standard neck sizing dies.
This is not the fault of the product , it is just a lack of understanding of how the die works and what it will feel like when you operate the press correctly.
Standard dies use a neck...

• JohnKielly

• 

I've used that method for years and never had a case problem. Typically a max runout of .0015

 

[KMW 1954]

My first foray with the Lee Collet Die in 6.5 Creedmore.

New Lapua cases. 6 sized and this was #7. Also the mandrel was too big.

Never again.

I'm going to the Redding.

Something failed and I am guessing it wasn't the die.

 

[chromatica]

I use an LE Wilson FS bushing die first on my 6ARC cases. I tumble the cases and then run them through a Lee Collet die with an undersize mandrel (Standard is .243 - .002 = .241. I ordered a custom .240 mandrel). I do this all on my Co-Ax press and it gives me runout <= .001.

 

[WSnyder]

The only thing I believe I do different than you guys is I use the collet die first. In my testing I found that using the Lee CD last changed the shoulder bump in about 1/5 cases (20%.) Not sure if it was my brass or what but I noticed slightly harder bolt closure on some cases. Upon rechecking the shoulder bump, I found that it had changed. JME

I do the same for the same reasons.

 

[BHP9]

Something failed and I am guessing it wasn't the die.

The die was the problem!

 

[KMW 1954]

The die was the problem!

So how did it do 6 with no incident and then just destroy the seventh? Also guessing if the mandrel was too large then it also took an abnormal amount of force to get it to cycle.

 

[BHP9]

So how did it do 6 with no incident and then just destroy the seventh? Also guessing if the mandrel was too large then it also took an abnormal amount of force to get it to cycle.

The mandrel was oversized as I stated in another thread.