Crimping the 5.7x28mm

Reloading info for the 5.7x28mm

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VITALIY
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Re: Crimping the 5.7x28mm

Post by VITALIY » 01 Sep 2008, 17:18

Grantness wrote:do u have the specs for that bushing?
The bushing that i use is 0.130" tall , made of .22 cal rod bruss guide.
The reason i prefere my way of crimping vs roll crimp is that it makes possible mutch wider range of adjustment in depth as well as in thickness of crimp.

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Re: Crimping the 5.7x28mm

Post by Grantness » 01 Sep 2008, 18:52

I agree...your was IS better. Can I buy a .223 Lee Factory Crimp Die to modify like you did (or did i need to get a specific brand)?

I just thought I would use the roll crimp on my TSX bullets since they seem to be the only bullets I own that I can roll crimp with my regular seating dies.

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Re: Crimping the 5.7x28mm

Post by VITALIY » 01 Sep 2008, 19:37

Grantness wrote:I agree...your was IS better. Can I buy a .223 Lee Factory Crimp Die to modify like you did (or did i need to get a specific brand)?

I just thought I would use the roll crimp on my TSX bullets since they seem to be the only bullets I own that I can roll crimp with my regular seating dies.
LEE factory crimp die will work. I'm not saing that roll crimp is compleatly usless, it's just less user frendly, with limited range of adjustment. Honestly i'd rather see you experiment with both, and see what you like better. :)

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Re: Crimping the 5.7x28mm

Post by panzermk2 » 02 Sep 2008, 02:30

The problem with the LEE crimping die is you have a 1in4 chance of getting one that has not had the collet cuts to deep. If they are to deep you cannot remove enough of the die base to properly push the 57 fare enough up into the collet

This is why we created out own CAD file for our own crimp die.
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Grantness
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Re: Crimping the 5.7x28mm

Post by Grantness » 02 Sep 2008, 07:37

i would be interested in purchasing a custom 5.7 crimp die if you still have any (even if they are $70).

If not Lee.... can u reccomend a better crimp die?

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Re: Crimping the 5.7x28mm

Post by panzermk2 » 02 Sep 2008, 08:46

There is no better. Currently we are waiting on a big order of shell plates, trim plates and crimp dies. Yes the crimp dies will be 70 bucks. That is our cost.
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Re: Crimping the 5.7x28mm

Post by tdevince » 03 Sep 2008, 13:27

Sounds good to me, I'm in for a crimp die at $70.00 when you get them!

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Re: Crimping the 5.7x28mm

Post by karbuv » 09 Sep 2008, 13:13

The crimp die is worth waiting on. IMHO, to get the most out of the 57, crimping is necessary. If you want to try making your own crimping die, start with a 218 BEE LEE crimp die and remove about 1/10 inch from the bottom of the inside part with the collet cuts. After removing 1/10 inch, try crimping with it and remove more as needed to obtain the crimp you want, perhaps around .115 -.125 if memory serves me. The collet cuts don't seem to be uniform on a die and from die to die, so good luck on getting a short collet cut die.
Kinda makes $70 a good price. :patriot:
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Re: Crimping the 5.7x28mm

Post by Hoover 1 » 30 Nov 2008, 20:31

Since I had a couple of my reloaded bullet set back in the case recently, I am looking into applying a crimp to my reloads.

Couple of questions for the experts.

If I understand how a crimp die works, it seems like either a .223, 22 hornet, .218 Bee or any .224 bullet round crimp die could be the starting point. Just remove sufficient material from the bottom of the die so the 5.7x28 round can interface with the crimp area on the die. The shorter the die to begin with, the less material you will need to remove. And it seems like you can not remove too much material (unless you remove the collet region during machining :( )

Panzer - Why is there a 1in4 chance of purchasing a Lee factory crimp die that has not had the collet cuts too deep? Are the tolerances that bad?
Vitaliy - What is the reason for the spacer with the .223 crimp die? Ease of setting up the die?

Thanks in advance,

Hoover

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Re: Crimping the 5.7x28mm

Post by Vortec MAX » 30 Nov 2008, 22:47

I'd buy a crimp die from ya. Count me in.

P.S. If you need CAD files of any of your designs, I work for ammo. :) I teach AutoCAD and SolidWorks at the university here.

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Re: Crimping the 5.7x28mm

Post by VITALIY » 01 Dec 2008, 08:16

[quote="
Vitaliy - What is the reason for the spacer with the .223 crimp die? Ease of setting up the die?

Thanks in advance,

Hoover[/quote]
As you can see, when you use .223 die for 5.7, you don't insert the round in to the shellholder, but, drop it down into the die, from the top, than rase the shell holder just to actuate the crimp. The spacer is needed to controll the width (thikness) of the crimped area, and without it, you'd have no consistency.

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Re: Crimping the 5.7x28mm

Post by panzermk2 » 01 Dec 2008, 09:26

Hoover 1 wrote: Panzer - Why is there a 1in4 chance of purchasing a Lee factory crimp die that has not had the collet cuts too deep? Are the tolerances that bad?
Vitaliy - What is the reason for the spacer with the .223 crimp die? Ease of setting up the die?

Thanks in advance,

Hoover
Yes it looks like LEE cuts the collets on a band saw. The depth of the cuts vary up to 1/8 of an inch and are all sorts of different angles.
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Re: Crimping the 5.7x28mm

Post by Hoover 1 » 01 Dec 2008, 19:27

Vitaliy/Panzer,

Many thanks for the information.

[/quote]Yes it looks like LEE cuts the collets on a band saw. The depth of the cuts vary up to 1/8 of an inch and are all sorts of different angles.[/quote]

Great, now I may have to make one of my own. :(

Thanks Guys,

Hoover

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Re: Crimping the 5.7x28mm

Post by CBinNH » 02 Dec 2008, 00:41

If you choose to make one:
http://www.57forum.com/viewtopic.php?f=19&t=974" onclick="window.open(this.href);return false;

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Re: Crimping the 5.7x28mm

Post by Hoover 1 » 02 Dec 2008, 02:51

CB,

Thanks, I think I will give it a try.

Thanks,

Hoover

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Re: Crimping the 5.7x28mm

Post by panzermk2 » 02 Dec 2008, 19:43

We are still going to try to bring out a crimp die. It's on the back burner now since we are so busy. Our biggest issue is getting the cost down.
Jay Wolf
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apache
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Re: Crimping the 5.7x28mm

Post by apache » 12 Jun 2009, 08:42

I decided to make a FCD. Below is how it went:

Started with a LEE 22 Hornet FCD
http://www.midwayusa.com/viewProduct/?p ... ber=523023
Note that the midway stock photo shows a long unthreaded range under the knurl...
however, the one I received had threads all the up to the knurl (good thing, allows the room to keep a lock nut)
Keep in mind as well that other have reported QA issues with how deep the slots are cut into the insert and some have not been able to shorten them without ruining the insert... (I got Lucky)

Also to remove the insert I used MO's method of putting a deep socket on the insert(slid into the die sleeve from the top) and knocking it out with a hammer. (MO's sites a 10mm, but my 10mm was too thick to sit inside the sleeve and reach the top of the insert. I used a smaller one that fit)

Next, had to determine how much to shorten the insert and outer die sleeve. (I used a dremel cutting wheel to cut both die sleeve and insert I cut the insert to 1.023" and the sleeve to 1.90")
My thinking was that the casing needed to be near the top of the insert for maximum crimp WRONG)
see pic. (length of top of case to bevel is 1.02" and another thread here noted 1.02, so I thought that was safe...WRONG)
I had already cut my insert to a length 1.023" before finding out that is too short
Image
Image

In reality the case mouth needs to be a good bit lower than the top of the insert.
I used a washer to make up this difference (since I already cut my insert too short)
If I did this again, I would cut my insert to 1.10" The Sleeve I cut to 1.90"
see pic
Image
Image


To show how the depth of the case in the insert affects the crimp I crimped one round with the washer and one without it
see pic (right hand round is with out the washer and IMHO an incorrect crimp)
Image
Image


I have been very satisfied with the crimp this is making on my reloads.. I just have an extra step of dropping the washer over the round before i raise it into the crimp die
(may try to glue it to the bottom of the insert one of these days)
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Vortec MAX
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Re: Crimping the 5.7x28mm

Post by Vortec MAX » 12 Jun 2009, 09:46

I still want a crimp die. Are you still planning on making some Panzermk2?

Mike

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Re: Crimping the 5.7x28mm

Post by romer522 » 12 Jun 2009, 09:59

Image


Image


:monkey: :monkey:

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Re: Crimping the 5.7x28mm

Post by Maerlyn13 » 12 Jun 2009, 12:40

I ordered the 218 Bee Lee FCD from Grafs online and used my lathe to cut it down. Works like a charm. I guess I got lucky with mine as I still had enough metal before the band saw cuts.

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