tackstrp
tackstrp
5 posts
Joined January 2009

accu-crimp - what is

The description on Dillion dies is accu-crimp for revolvers and taper crimp for auto. What is a accu-crimp? new term for me.
dillon
Administrator
dillon
2,945 posts
Joined July 2007

RE: accu-crimp - what is

 The accu-crimp is a two-stage crimp die. It starts with a taper crimp, which is sufficient for lighter loads. If a firmer crimp is needed, adjust the die down further. This applies a roll crimp on top of the taper crimp, giving a firm grip on the projectile.
billPTC
billPTC
1 post
Joined December 2017

RE: accu-crimp - what is

My new custom build “cowboy action shoot” rifle calls for roll crimp for the 45LC round, they recommend Lee Factory roll crimp. How does this differ from you crimp??
AtlCapt
AtlCapt
5 posts
Joined January 2013

RE: accu-crimp - what is

I have had the Same question. I am loading .44 SPL as well as .44 Magnum (S&W Model 69), using a Hornady 200 gr bullet with cannelure. My question is do Dillon dies include "accu-crimp" in the carbide .44 set. Since I have been reloading this ammunition I have crimped the round until it freely goes into the Wilson case gauge and fall out when the gauge is inverted. I have had no problems yet but I do not want problems in the future. The next question is do you have information/ instructions in using the "accu-crimp", I can find no reference to it in the instructions included with the die set.