The Firing Line Forums

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

Reply
 
Thread Tools
Old January 8, 2013, 10:38 PM   #1
tollys103079
Member
 
Join Date: December 7, 2012
Posts: 36
.223 FMJ / Hornady 55 grain w/c crimp or no crimp

Do you have to crimp these? I have never crimped my .223 rounds but with the cannelure I am not sure what to do. Anyone do anything different. My normal load is a 55 grain V Max, but the neighbor had some of these so I was going to load them up for some target rounds.

2.200 C.O.A.L CFE 223 powder started at 26 grains and made 10 each in .3 intervals want to get to the range, but wanted to double check on crimp first.

Thanks
tollys103079 is offline  
Old January 8, 2013, 10:41 PM   #2
RKG
Senior Member
 
Join Date: June 18, 2009
Location: Boston
Posts: 286
I never crimp slugs in 5.56 (.223 Rem).
RKG is offline  
Old January 8, 2013, 10:44 PM   #3
lll Otto lll
Senior Member
 
Join Date: June 1, 2008
Location: Lone Star State
Posts: 169
No need to crimp....just ignore the cannelure.
lll Otto lll is offline  
Old January 8, 2013, 10:45 PM   #4
Xfire68
Senior Member
 
Join Date: March 31, 2010
Location: Communist State of IL.
Posts: 1,428
No crimp or a little taper is all. Vmax get none and FMJ's get a small amount. I am not saying it is needed I just do it this way.
__________________
NRA Life Member, SAF Member

www.aac300blackoutbrass.com A Veteran owned Business.
Xfire68 is offline  
Old January 8, 2013, 10:46 PM   #5
tollys103079
Member
 
Join Date: December 7, 2012
Posts: 36
So if no need to crimp should I stick to my standard 2.250 COL or should I go to the recomended 2.20 that actually puts the end of the brass right in the cannelure.
tollys103079 is offline  
Old January 9, 2013, 04:36 AM   #6
the led farmer
Senior Member
 
Join Date: July 8, 2012
Posts: 116
If your going to crimp seat to the cannelure
the led farmer is offline  
Old January 9, 2013, 06:16 AM   #7
overthere
Senior Member
 
Join Date: July 20, 2012
Posts: 186
I do not crimp when making cartridges to shoot from my bolt action 223, but I do crimp when making cartridges for my AR. For the latter I seat and crimp to the cannelure.
overthere is offline  
Old January 9, 2013, 05:54 PM   #8
tollys103079
Member
 
Join Date: December 7, 2012
Posts: 36
Ok so with my RCBS Die How do I know how much crimp? With the .45 acp I know if it fits in my shell gauge it is right and I can measure it, but not sure how to tell on the .223 with or without cannelures.

I tested a few and they look good, but I have no idea how much I put on them a half of turn past touching the case mouth.

Also do I have to trim all the cases in order to crimp the same everytime? I guess I do not know if my cases are all the same length.
tollys103079 is offline  
Old January 9, 2013, 07:29 PM   #9
oldpapps
Senior Member
 
Join Date: September 22, 2011
Location: Middle America
Posts: 473
Only 'crimp' if there is a need to.
Simple and to the point.

Be safe,

OSOK
oldpapps is offline  
Old January 10, 2013, 06:23 AM   #10
overthere
Senior Member
 
Join Date: July 20, 2012
Posts: 186
Quote:
Ok so with my RCBS Die How do I know how much crimp?
For bullets with a cannelure you should be able to tell by looking at / touching a non-crimped cartridge and a crimped one. The brass should be ever so slightly 'folded in' into the cannelure area. How much depends on the level of crimp. Less is typically more, typically no need to go crazy on the crimp.

You do not have to trim your brass to the same length but if you are seating to the cannelure you will get more consistent seating depths if you do so.

Lee makes a 'factory crimp die' for 223 which is just used for crimping. You would seat the bullet without crimp with the seating die, then crimp with the factory crimp die. It has worked well for me.
overthere is offline  
Old January 10, 2013, 11:29 AM   #11
tollys103079
Member
 
Join Date: December 7, 2012
Posts: 36
I crimped some last night with my RCBS die just because I wanted to see them and it turned the brass in just a little bit and made them look like factory. I will shoot them this Saturday and determine if I should do it to all of them for my AR or not. I have never had an issue without a cannelure but I like to make sure each round is as good as it can be and I like to tweak things. Gives me something to do on these long cold winter nights when I cannot go fishing.
tollys103079 is offline  
Old January 13, 2013, 01:43 AM   #12
pumpkinheaver
Senior Member
 
Join Date: May 22, 2006
Location: Missouri
Posts: 294
I crimp them for my AR. I never crimp .223 for bolt guns.
__________________
Just because your paranoid don't mean they aint out to get ya.
pumpkinheaver is offline  
Old January 13, 2013, 03:27 AM   #13
IMtheNRA
Senior Member
 
Join Date: January 27, 2001
Posts: 139
Tollys, I'm curious to find out what your results were.

I use the same bullet in my non-precision plinking ammo and like you, I could not resist the urge to crimp last year, so I set up a second seating die just to crimp on the press station after seating. My 100-yard groups went from 1.5" to 2.25" from a 20" 1:7 Colt AR with A2 sights.

Too bad, because the rounds did look really nice when crimped :-)
IMtheNRA is offline  
Old January 13, 2013, 08:53 PM   #14
tollys103079
Member
 
Join Date: December 7, 2012
Posts: 36
Results

Loaded up 20 at different powder weights using CFE Powder and for the life of me I cannot remember my numbers, but I will get them and post them later if anyone wants them. I loaded some Sierra Blitzkings 55 grain and FMJ 55 grain.

Both with the same powder loads seated the FMJs at 2.20 and the shot great. 5 shot groups better then I can shoot, I wish I could see a real difference. The lightest powder group was the worst but after that they all looked great to me, but when the range is busy I dont feel like I have the time to really sit down on the bench and measure my groups like I want at least since I started reloading.

I did notice that the crimped ones did not show any major improvement and I measured the last round before I shot it twice and it was still 2.20. So they didnt shorten up.

So I guess I am going no crimp at least until I see something different. You are right though they sure looked pretty.
tollys103079 is offline  
Old January 13, 2013, 09:21 PM   #15
Mobuck
Senior Member
 
Join Date: February 2, 2010
Posts: 2,381
All my loads that might be used in AR's are crimped. Loads specifically for the bolt rifles are not.
I've seen pictures of a couple of AR's destroyed by uncrimped ammo that suffered bullet push back during feeding.
Mobuck is offline  
Reply

Thread Tools

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 08:23 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
This site and contents, including all posts, Copyright © 1998-2014 S.W.A.T. Magazine
Copyright Complaints: Please direct DMCA Takedown Notices to the registered agent: thefiringline.com
Contact Us
Page generated in 0.09161 seconds with 9 queries