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Interesting Article on Crimping

This is a discussion on Interesting Article on Crimping within the Reloading forums, part of the Firearm Forum category; There is an article in the new Handloader magazine by Brian Pearce on crimping. He pretty much says the same thing that Iowegan has been ...


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Old March 2nd, 2017, 05:50 PM   #1
 
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Interesting Article on Crimping

There is an article in the new Handloader magazine by Brian Pearce on crimping. He pretty much says the same thing that Iowegan has been discussing. The author talks about a "chamfer" style roll crimp. He says RCBS produces it. He says in the article that Dick Casull developed it in 1983 for the 454 Casull.

My question is has anybody used this crimp?



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Old March 2nd, 2017, 06:06 PM   #2
 
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Have you got a lik to this article?
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Old March 2nd, 2017, 06:12 PM   #3
 
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Sorry, I read the print version, #307.
It came in the mail today.
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Old March 2nd, 2017, 06:27 PM   #4
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I think it's funny about companies that make reloading dies. There's not much to brag about with sizer/decapping dies, other than most are now carbide that don't require case lube. The same for expander dies .... not much you can do to make them different. Bullet seating dies all work the same. That leaves crimping dies where each company claims their crimp die is the answer to your prayers. Here's the facts .... when crimp dies are adjusted properly, they all produce a good crimp .... no matter what brand. Seems they all have some magic name like "chamfer" but when you really examine the crimps, there's really only two types .... a roll crimp that does indeed roll the case mouth slightly to grab the bullet in the crimp groove or cannelure .... or a taper crimp that merely tapers the case mouth to grab onto a bullet when there's no cannelure or crimp groove. Others are just a variation of the same theme.
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Old March 3rd, 2017, 03:35 AM   #5
 
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Re: Roll Crimping
The Redding Profile Crimp dies produce rounds that are slightly more accurate than with any other roll crimp die I have used.
I don't find crimp to be very significant in terms of accuracy (varying it up and down), but I certainly noticed an improvement with the Redding dies.

For taper crimp, just buy the Lee taper crimp dies (not the FCD)--they are as good as any.
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Old March 3rd, 2017, 05:59 AM   #6
 
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Quote:
Originally Posted by Iowegan View Post
I think it's funny about companies that make reloading dies. There's not much to brag about with sizer/decapping dies, other than most are now carbide that don't require case lube. The same for expander dies .... not much you can do to make them different. Bullet seating dies all work the same. That leaves crimping dies where each company claims their crimp die is the answer to your prayers. Here's the facts .... when crimp dies are adjusted properly, they all produce a good crimp .... no matter what brand. Seems they all have some magic name like "chamfer" but when you really examine the crimps, there's really only two types .... a roll crimp that does indeed roll the case mouth slightly to grab the bullet in the crimp groove or cannelure .... or a taper crimp that merely tapers the case mouth to grab onto a bullet when there's no cannelure or crimp groove. Others are just a variation of the same theme.
Thanks Iowegan! I had not heard of the chamfer style roll crimp. Most of my handgun dies are from the early 70's. I have never had any trouble with crimping unless the case length's were uneven.

I am off to the range this morning for some stress relief and a big smile on my face. I love the smell of burning gunpowder in the morning. It smells like VICTORY!
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Old March 3rd, 2017, 07:00 AM   #7
 
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Quote:
Originally Posted by Iowegan View Post
I think it's funny about companies that make reloading dies. There's not much to brag about with sizer/decapping dies, other than most are now carbide that don't require case lube. The same for expander dies .... not much you can do to make them different. Bullet seating dies all work the same. That leaves crimping dies where each company claims their crimp die is the answer to your prayers. Here's the facts .... when crimp dies are adjusted properly, they all produce a good crimp .... no matter what brand. Seems they all have some magic name like "chamfer" but when you really examine the crimps, there's really only two types .... a roll crimp that does indeed roll the case mouth slightly to grab the bullet in the crimp groove or cannelure .... or a taper crimp that merely tapers the case mouth to grab onto a bullet when there's no cannelure or crimp groove. Others are just a variation of the same theme.
Well said Iowegan.

At the rate that companies are coming out with "New" products a person would think that the art of reloading was introduced to us last week.

I can see how someone new to reloading can get overwhelmed with all the special dies they are lend into believing they need to do this.

I keep it simple, what has worked for me for the last 28 years I still do today. If it ain't broke, don't fix it. JMHO.


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Old March 3rd, 2017, 08:58 AM   #8
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I've been using a Redding Profile crimp n my revolver handloads for quite a while. It's kinda a "hybrid' tapered roll crimp...
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