The Firing Line Forums

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

Reply
 
Thread Tools
Old October 21, 2006, 01:57 AM   #1
40MM
Member
 
Join Date: April 15, 2006
Posts: 69
Strange marks on .357 cases :confused: (large pic)

Hi Guys, while de priming my .357 cases last night i noticed these strange marks on them. What could be causing this? The case on the right has not been de primed as yet. I am using a Lee Turret press with Lee dies. I notice a similar problem when loading my 9mm cases as well.
40MM is offline  
Old October 21, 2006, 03:57 AM   #2
gary2905
Member
 
Join Date: December 20, 2005
Location: Rural-not for long- Virginia
Posts: 60
Try cleaning the dies.
Pull the decapping pin and clean the die like you would a gun barrel and see if the striation don't disappear.
If by strange marks you mean the line just above the rim, it is the limit of the sized region of the case, i.e., the lowermost travel of the case into the die.
gary2905 is offline  
Old October 21, 2006, 04:58 AM   #3
40MM
Member
 
Join Date: April 15, 2006
Posts: 69
Will try cleaning the dies like you say. By marks , i mean the long black lines on the two cases. Compare it to the case on the right.
40MM is offline  
Old October 21, 2006, 08:37 AM   #4
cdoc42
Senior Member
 
Join Date: March 13, 2005
Location: Pennsylvania
Posts: 409
Probably powder fouling on the cylinder and case from firing, compressed onto the brass during resizing. Try a different powder that may be cleaner burning. What are you using now?
cdoc42 is offline  
Old October 21, 2006, 02:11 PM   #5
silicon wolverine
Senior Member
 
Join Date: April 28, 2006
Location: South dakota
Posts: 674
dirty dies. i have to clean mine about every 2500 rounds or the brass cojes out looking like that.

SW
silicon wolverine is offline  
Old October 21, 2006, 02:50 PM   #6
40MM
Member
 
Join Date: April 15, 2006
Posts: 69
the problem seemed to be dirty dies. cleaned it out and seems better. im using mp 200 powder.
40MM is offline  
Old October 21, 2006, 08:04 PM   #7
JJB2
Junior member
 
Join Date: December 14, 2005
Posts: 558
also you might try a carbide sized die.... my lee dies have a carbide insert in the resizing sie and the brass comes out looking it has been cleaned again....
JJB2 is offline  
Old October 22, 2006, 06:46 AM   #8
HSMITH
Senior Member
 
Join Date: June 21, 2002
Posts: 2,019
Crank your die down to hit the shell holder, then raise it one quarter turn. You aren't going low enough on the cases.
HSMITH 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 08:17 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 0.07447 seconds with 7 queries