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Old May 22, 2002, 10:30 PM   #1
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Roll or Taper Crimp 44mag

What is the prefered method of crimping 44mag for my Super Redhawk?

If I get a set of RCBS Dies, how do I know if the crimp die is roll or taper crimp?

I need to know before I go to the store on Friday and would appreciate the help!

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Old May 22, 2002, 10:39 PM   #2
Mal H
Join Date: March 20, 1999
Location: Somewhere in the woods of Northern Virginia
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A roll crimp is the preferred crimp for a .44 Magnum/Special. On the box label it will have "TC" along with the cartridge designation if it is a taper crimp die set. If it is roll crimp it will have only the cartridge designation, i.e., it won't have "RC" or the like. And to be on the safe side, I would open the box and check the top of the crimping die. It will say whether it is roll or taper.

In reality, you could probably take a .44 Mag die set blindfolded since the store would most likely have to special order a taper crimp die set. So the odds are many to 1 that you will have only that one choice anyway.
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Old May 22, 2002, 10:41 PM   #3
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For the full loads, anyway....

Roll crimp the snot out of it!!!

Heavy crimp does two important things:
Helps the powder to burn properly, and
Keeps bullets from pulling out of the cases. In a revolver, heavy recoil acts just like a kinetic bullet puller.

Most factory dies for revolvers are designed to roll crimp. It's a pretty safe bet that standard RCBS dies are roll crimpers.
I would recomend the Lee Factory Crimp die. It's what I use on my 44 Magnum. And dang near everything else, too.
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Old May 23, 2002, 12:47 AM   #4
Mike Irwin
Join Date: April 13, 2000
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Taper crimp may hold you up through medium-power loads.

After that, you'll need increasing amounts of roll crimp as the power levels go up.
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Old May 23, 2002, 04:32 AM   #5
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Best: Redding Profile Crimp die; will enhance accuracy and consistency. Apply 'heavy' crimp to 'heavy' loads; apply 'medium-heavy' crimp to all other loads.

Your results will not vary.
"all my ammo is mostly retired factory ammo"
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Old May 24, 2002, 10:27 AM   #6
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Roll or Taper Crimp 44mag

I use a TAPER CRIMP, which is nothing more than the sizer die without the decapping stem, on all my handguns.
If you trim your handgun/44 cases then a roll crimp will woork well. I DO NOT TRIM my handgun cases and with a taper crimp, it doesn't matter.
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