The Firing Line Forums

Go Back   The Firing Line Forums > The Skunkworks > The Smithy

Thread Tools Search this Thread
Old May 26, 2008, 08:43 PM   #1
Join Date: May 26, 2008
Location: metro detroit
Posts: 49
kimber denting brass

Hi im new here an new to reloading,my almost new kimber is denting the brass about a 1/3 to 1/2 way down,dose anybody know why?im loading 230 lrn 5.5 grains of unique almost everyone had the dent.they are ok out of my 4506.i racked some rounds through the kimber an one had a slight ding.any suggestions would help.
Thank You ED Mink
Attached Images
File Type: jpg 0526082119.jpg (12.2 KB, 61 views)
bear300us is offline  
Old May 26, 2008, 10:02 PM   #2
Senior Member
Join Date: August 24, 2001
Location: LC, Ca
Posts: 1,840
Your empties are hitting the back of the ejection port. If you look closely, you'll see brass marks there. Does it dent brass with factory ammo? If not, you could switch to a different powder/load. If you're absolutely in love with your current load, a solution to late ejection is to tune the extractor and swap your ejector for one with a longer nose.
DnPRK is offline  
Old May 26, 2008, 11:40 PM   #3
Senior Member
Join Date: February 13, 2006
Location: Washington state
Posts: 12,865
230 gr FMJ over 5.5 gr of Uniques is the same load I use for hardball when I load it.

As DnPRK said, the ding is from the rear edge of the ejection port. If the port has not been scalloped, most of your brass will pick up the ding. It is caused by the extractor holding the brass very tight and the nose of the extractor being too sharp and not releasing the brass as the ejector strikes the case. Fit the extractor (bolt face to hook clearance, radius the tip of the extractor) and make sure the extractor is not clocking (rotating in place when you fire). If you don't feel comfortable doing this yourself, it is a relatively simple task for a gunsmith.

I wouldn't worry too much about the ejector, it seems to be hitting the case hard enough to drive the case against the port.
Never try to educate someone who resists knowledge at all costs.
But what do I know?
Summit Arms Services
Taylor Machine
Scorch 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 07:19 AM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
This site and contents, including all posts, Copyright © 1998-2017 S.W.A.T. Magazine
Copyright Complaints: Please direct DMCA Takedown Notices to the registered agent:
Contact Us
Page generated in 0.13544 seconds with 10 queries