The Firing Line Forums

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

Thread Tools Search this Thread
Old August 19, 2011, 02:02 PM   #1
Senior Member
Join Date: December 29, 2010
Location: Gwinnett County Georgia
Posts: 886
Roll Crimping

Can someone tell me what this means. I got it out of Lymans 49th edition.

Does it apply to 9mm or .45ACP
Do not follow where the path may lead, go, instead where there is no path and leave a trail - Ralph Waldo Emerson
GregInAtl is offline  
Old August 19, 2011, 02:14 PM   #2
Senior Member
Join Date: December 14, 2004
Location: Northern Indiana
Posts: 5,240
What it means is that if you over roll crimp a semi auto case that seats on the upper end (rim) of the case the round will end up to far into the chamber.
This can make for unreliable rounds and failures.
Its one reason that every auto that I reload for I use a taper crimp. It allows for a firm crimp but leaves the rim of the case so it can seat on it when it’s in the chamber.
It applies to any auto rimless case.
Ozzieman is offline  
Old August 19, 2011, 02:31 PM   #3
Senior Member
Join Date: November 16, 2010
Location: Arkansas
Posts: 996
9mm and 45acp should have a taper crimp. The roll crimp applys to revolver loads for the most part.
NRA life member

When the going gets tough, I just open another beer.
bossman is offline  
Old August 19, 2011, 09:06 PM   #4
T. O'Heir
Senior Member
Join Date: February 13, 2002
Location: Canada
Posts: 4,833
"...Does it apply to 9mm or .45ACP..." Absolutely. Both headspace on the case mouth. No roll crimp for either.
Read the whole manual before you load anything.
Spelling and grammar count!
T. O'Heir is offline  

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 08:41 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2015, vBulletin Solutions, Inc.
This site and contents, including all posts, Copyright © 1998-2015 S.W.A.T. Magazine
Copyright Complaints: Please direct DMCA Takedown Notices to the registered agent:
Contact Us
Page generated in 0.06504 seconds with 9 queries