The Firing Line Forums

Go Back   The Firing Line Forums > The Skunkworks > Handloading, Reloading, and Bullet Casting

Reply
 
Thread Tools Search this Thread
Old March 30, 2008, 04:09 AM   #1
3gunfreak
Member
 
Join Date: February 28, 2007
Location: North Carolina
Posts: 43
Crimping question

.40 caliber 180 gr Hornady over 4.0 grams of Bullseye powder on a Dillon 650.

My question is :If I back off my crimp some, will that help me dial in my grouping. Right now I am grouping about 10 shots in the size of a softball but I feel like I can get them tighter. Is the correct crimp that crucial or should I start a new work up with more/less powder?

Any help would be appreciated in my eternal search for accuracy.

Thanks
3gunfreak is offline  
Old March 30, 2008, 07:53 AM   #2
SmokinTom
Senior Member
 
Join Date: November 29, 2004
Location: Ohio
Posts: 479
You really should try a Factory Crimp die if your not useing one.
SmokinTom is offline  
Old March 30, 2008, 10:14 AM   #3
Robert M Boren Sr
Senior Member
 
Join Date: December 29, 2004
Location: NW Montana
Posts: 269
How far are we talking about on the grouping? The crimp isn't usually the culprit, I would try using a bench rest and then messing around with powder or bullet brand before I would mess with the crimp.
Robert M Boren Sr is offline  
Old March 30, 2008, 10:38 AM   #4
JDG
Senior Member
 
Join Date: November 28, 2005
Location: West Michigan
Posts: 673
If you dont bell your case too far, seating the bullet pretty much irons out the belling. Lee FCD are nice, since it seperates the seating from the crimp, but really theres not much to crimp if your belling to the minimum If anything the FCD makes a nice radius on the case mouth, and post sizing is good insurance.
JDG is offline  
Old March 30, 2008, 04:50 PM   #5
circle141
Junior Member
 
Join Date: January 31, 2008
Location: Pinellas Park,Florida
Posts: 9
crimp

Sir.

The 40 cal. head spaces on the mouth and should have a taper crimp only. Any other crimp will change the head space.


Mike Circle
circle141 is offline  
Old March 31, 2008, 02:14 PM   #6
JDG
Senior Member
 
Join Date: November 28, 2005
Location: West Michigan
Posts: 673
Bad choice of word The FCD for the 40 S&W is a taper crimp, and it leaves a nice finished edge when performed correctly.
JDG is offline  
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 03:39 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
This site and contents, including all posts, Copyright © 1998-2021 S.W.A.T. Magazine
Copyright Complaints: Please direct DMCA Takedown Notices to the registered agent: thefiringline.com
Page generated in 0.04962 seconds with 10 queries