Redding Profile Crimp Die....again

[Tree Rat]

Have a XL-650 set-up with subject die for 38 Special cause everybody says you have too have this die.

Now I wonder.................

The degree crimp you can apply with the Redding Profile Crimp is limited to how far you can screw it down until it contacts the shell plate. For those who are familiar with this set-up...........

1. What do you suppose is the degree of crimp that is being
applied to the cartridge case when the Redding die is at full
shell plate contact position, i.e. moderate, firm, crusher?

The Dillon die does not have a contact limitation and appears to be able to apply a much greater degree of crimp, though you may run out of lock nut thread.

Assuming the Dillon die is able to apply a much greater degree of crimp..........

1. What is it EXACTLY that makes the Redding Profile Crimp die
superior to the Dillon die?

2. Is the degree of crimp the Redding die is able to apply about
all you need even with the slowest of powders, and if yes does
it then come down to a more uniform quality crimp?

Inquiring minds want to know.

WESHOOT......just because is not a correct answer

TR

 

[swifter]

Tree Rat,

As you probably know, there are two basic types of crimps, roll crimp, which turns the case mouth into the bullet, and taper crimp, which presses the case near the mouth evenly against the bullet. This one is generally used on rounds that headspace on the casemouth.
Taper crimp combines elements of both, and is ideal for revolver rounds. You're going to need to do some trial-and-error on the Dillon. If you run out of die threads, try putting the lock-ring on the bottom.
Sadly, making fine adjustments on a Dillon is a RPIA. Good news is that once done, it lasts...
Which I guess is why my 550 doesn't get a lot of use anymore, I'm deep into experimentation, and a single stage works a lot better there. I just leave it set up for .45 ACP for when I need a bunch in a short time.

Since I was introduced to profile crimps, I load all my revolver rounds with it.

Hope this was of some help...
Tom

 

[braindead0]

I know that what feels like a 'medium' crimp on the profile crimp die, is actually pretty heavy in practice. I had a squip and the bullet moved perhaps 1/16" in the case, not even enough to jam up my pistol.