The Firing Line Forums

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

Reply
 
Thread Tools Search this Thread
Old July 28, 2020, 07:39 AM   #1
reloader74
Junior Member
 
Join Date: July 27, 2020
Posts: 8
bad primers

Whats the chances of 10 to 15 bad primers in a lot? Been having light primers strikes on a few reloads. Some will fire when stroke the second and some would not. Also I have pulled the bullets from some and tried firing the empty brass, some would fire and some would not.
reloader74 is offline  
Old July 28, 2020, 07:48 AM   #2
big al hunter
Senior Member
 
Join Date: March 12, 2011
Location: Washington state
Posts: 1,404
What system are you using to prime the cases? And what primers are you having trouble with? What gun where you using? That sounds like maybe the primers were not set completely into the pockets, but it's hard to diagnose without more information.
__________________
You can't fix stupid....however ignorance can be cured through education!
big al hunter is offline  
Old July 28, 2020, 08:25 AM   #3
reloader74
Junior Member
 
Join Date: July 27, 2020
Posts: 8
Using Hornady LNL press. Using WLR primers. Savage 10PT - SR 308. Thought it may have been bumping the shoulder back to much. Ruled that out by just neck sizing.
reloader74 is offline  
Old July 28, 2020, 10:05 AM   #4
higgite
Senior Member
 
Join Date: October 21, 2010
Posts: 856
Quote:
Originally Posted by reloader74
Been having light primers strikes on a few reloads. Some will fire when stroke the second and some would not.
Do the ones that don't fire on restrike still show a light strike or normal strike?
higgite is offline  
Old July 28, 2020, 10:35 AM   #5
reloader74
Junior Member
 
Join Date: July 27, 2020
Posts: 8
higgite, no. The re strike starts mushrooming the primer out. A few of them would fire on second strike, some would not. I've taken bolt, firing pin, spring etc. apart and checked. Nothing is broke or obviously out of place.
reloader74 is offline  
Old July 28, 2020, 10:53 AM   #6
reddog81
Senior Member
 
Join Date: October 16, 2014
Location: Iowa
Posts: 1,266
Firing on the second strike probably means the primer wasn't seated deep enough to begin with. The first hit fully seats the primer and the second hit ignites it.
reddog81 is offline  
Old July 28, 2020, 11:03 AM   #7
ballardw
Senior Member
 
Join Date: September 19, 2008
Posts: 593
Which brass? Military surplus may mean you aren't quite getting rid of the crimp before priming.

Or possible dirty primer pockets causing a not-quite fully seated primer.
__________________
-+-+-+-+-+-+-+-+-+-+-+-+-+-+
All data is flawed, some just less so.
ballardw is offline  
Old July 28, 2020, 11:10 AM   #8
Bart B.
Senior Member
 
Join Date: February 15, 2009
Posts: 8,000
Be sure the firing pin sticks out past the bolt face at least .060" in the fired position.

Verify the cartridge head to shoulder reference dimension is no more than .004 inch less than chamber headspace.

Last edited by Bart B.; July 28, 2020 at 11:18 AM.
Bart B. is offline  
Old July 28, 2020, 11:12 AM   #9
reloader74
Junior Member
 
Join Date: July 27, 2020
Posts: 8
I'm using once fire brass Winchester and Remington bought off the shelf. Is there a better way to seat the primer then using progressive press?
reloader74 is offline  
Old July 28, 2020, 12:27 PM   #10
Marco Califo
Senior Member
 
Join Date: April 4, 2011
Location: LA (Los Angeles)
Posts: 1,934
Yes. I recommend a hand primer, and moving primed brass to your press. I have used a couple of different RCBS hand primers and they work very well. Hand Primers have a lot more tactile feedback - you can tell by feel when seating properly. You squeeze fairly strongly to seat primers. I made shallow imprints on some rifle primers, and decided that was normal.
Primers need to be seated with some force, as the primer legs will contact the bottom of the primer, and you need to squish them a bit. Primers should be below flush with the case.
If they fire on a second strike they are good primers and we're not seated deeply enough.
__________________
............

Last edited by Marco Califo; July 29, 2020 at 12:25 AM. Reason: Two too many typos.
Marco Califo is offline  
Old July 28, 2020, 12:50 PM   #11
reloader74
Junior Member
 
Join Date: July 27, 2020
Posts: 8
Getting off topic, but at one point I was thinking the seating depth of the bullet was was not correct and not letting the shoulder make full contact causing the light strikes. I know it sound crazy, but if the bullet is bottomed out on the lands before the shoulder makes contact the transfer of force between the primer and firing pin is lost. I checked oal with hornady ogive gauge. OAL 2.745'' that's with the bullet touching the lands. Books recommend 2.800'', my bolt will not close at that length.
reloader74 is offline  
Old July 28, 2020, 07:35 PM   #12
Average Joe
Senior Member
 
Join Date: August 29, 2005
Location: Easton, PA
Posts: 1,197
Not the primers, I can go thousands and thousands before I get a bad primer.... I would venture to say that you are not fully seated in the case.
Average Joe is offline  
Old July 29, 2020, 06:54 AM   #13
hounddawg
Senior Member
 
Join Date: March 1, 2009
Posts: 3,103
A few years back I was loading a couple of hundred pistol rounds per week for the wife on a LnL AP and I always gave a little extra "oomph" on the downstroke to ensure the primers were fully seated. Also check to see that the primer seating punch is completely screwed in and that the correct size is installed. If you have the large punch in and seating small primers they would go in but not go below flush
__________________
“How do I get to the next level?” Well, you get to the next level by being the first one on the range and the last one to leave.” – Jerry Miculek

Last edited by hounddawg; July 29, 2020 at 07:00 AM.
hounddawg is offline  
Old July 29, 2020, 07:12 AM   #14
reloader74
Junior Member
 
Join Date: July 27, 2020
Posts: 8
Thanks hounddawg, last night I started checking the primer system of the LNL and found where the primer punch bottoms out on the press body there was a .010'' crater worn in the cast aluminum. Put a shim over the crater and started priming brass. I could tell the difference and hear the primer bottoming out in the pocket. I will be testing my theory today at the range. Will give an update after.
reloader74 is offline  
Old July 29, 2020, 09:55 AM   #15
hounddawg
Senior Member
 
Join Date: March 1, 2009
Posts: 3,103
call Hornady CS, they will send you a new one. I had excellent experiences with them when I was using their AP, they sent me dozens of springs etc free of charge when the wife was playing with pistols. I bet I loaded 20K or more 9mm on that little press over a course of a couple of years. I wore out some parts lol
__________________
“How do I get to the next level?” Well, you get to the next level by being the first one on the range and the last one to leave.” – Jerry Miculek
hounddawg 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 11:14 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
This site and contents, including all posts, Copyright © 1998-2018 S.W.A.T. Magazine
Copyright Complaints: Please direct DMCA Takedown Notices to the registered agent: thefiringline.com
Contact Us
Page generated in 0.06786 seconds with 9 queries