The Firing Line Forums

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

Reply
 
Thread Tools
Old July 11, 2009, 04:26 PM   #1
Plaz
Senior Member
 
Join Date: December 23, 2007
Posts: 131
Primer seating depth adjustment on Hornady LNL press

Is there a way to adjust the depth a primer is installed on a Hornady LNL press using 45 acp rounds in a Sig 220 pistol?

I am trying to increase the depth of the primer from flush with the base of the case to help reliability of the primer firing.
Plaz is offline  
Old July 11, 2009, 05:46 PM   #2
Shane Tuttle
Staff
 
Join Date: November 28, 2005
Location: Blue Grass, IA
Posts: 8,594
To clarify, are you trying to physically seat the primer deeper into the case or are you trying to bring the primer out?

If the primer is seating well below the case and if this is your problem, I'd ditch the case. I wouldn't try an adjustment that keeps the primer from fully seating into the case, either. The firing pin could end up pushing the primer initially and would cause the pin to lose momentum and the result would be the primer not igniting.

This could be a nitpick on my observational theory. But the simplest fix is to keep brass that has the correct primer depth when fully seated. And I don't think Hornady's primer seater can be adjusted. Although I have the older style....
__________________
If it were up to me, the word "got" would be deleted from the English language.

Posting and YOU: http://www.albinoblacksheep.com/flash/posting
Shane Tuttle is offline  
Old July 11, 2009, 08:06 PM   #3
mactex
Member
 
Join Date: December 22, 2006
Posts: 62
The only adjustment is how much pressure you apply. If the primers are not seating all the way I would wonder if the primer pockets may need to be cleaned out. Other than that, it would almost have to be a problem where your particular brand/model of primer is too large for the brand/model of brass case. But, I've never heard tale of anything like that before.
mactex is offline  
Old July 12, 2009, 12:26 PM   #4
44 AMP
Staff
 
Join Date: March 11, 2006
Location: Upper US
Posts: 11,487
moving to reloading forum....

and proper seating depth is all the way to the bottom of the pocket. If this is flush, fine. Slightly below flush, even better.

Although primers are all supposed to be the same size, I have found that certain brands seat "easier" then others. Also, some brands of brass seem "tighter". The first step is to change one component (either one, primers or brass) and see if the problem persists.

Can't help with your press, don't know it, sorry.

One thing I did (and this after more than 35 years of reloading) I went to a hand primer unit. I use the RCBS one today, and no longer use the press mounted systems at all. Yes, it is a bit of a hassle, and slowed down the "rounds per hour" count, starting with fired brass, but it gives me complete feel over the seating process. I can clearly feel when the primers bottom out in the pocket, and no extra force is used, preventing crushed primers. I used to use a progressive press, and found the lack of feel both for primer seating, but more importantly for bullet seating to result in damaged rounds. Now, I simple work on a batch process. All brass gets sized in one session. Then primed (by hand) in another session, after checking (and trimming as needed). Then in another session, I go on to finish loading the rounds. Works for me, and I reload for over 25 different rifle and pistol cartridges.
__________________
All else being equal (and it almost never is) bigger bullets tend to work better.
44 AMP is offline  
Old July 22, 2009, 03:04 AM   #5
eod_usa
Junior Member
 
Join Date: June 22, 2008
Posts: 3
LnL primer depth

I too, have a problem of not seating deep enough. I end up hand priming.

I think Hornady needs to modify the primer punch to be a tad longer. Running out of stroke to press deeper.
eod_usa is offline  
Old July 23, 2009, 12:08 AM   #6
impactco
Senior Member
 
Join Date: January 12, 2008
Posts: 102
I had this same issue with my LNL. I stopped using CCI primers with this press and the issue was resolved.
impactco is offline  
Old July 23, 2009, 12:48 AM   #7
eod_usa
Junior Member
 
Join Date: June 22, 2008
Posts: 3
CCI primers will be harder to seat on LNL AP

I measured the primers, they are about 0.001 to 0.002 larger in diameter than Federal primers.
I used the same case and primed them with Federal primers and the LNL press was flawless.

CCI primers will not need to be hand primed.

BTW, I unscrewed the lever arm until it sits flush on the botton yoke, put the jam nut on top. This gives me slightly more leverage which helps seat the primer a bit deeper.
eod_usa is offline  
Old July 23, 2009, 07:05 AM   #8
Master Blaster
Senior Member
 
Join Date: October 11, 1999
Location: One of the original 13 Colonies
Posts: 2,027
You can call hornady and ask them for another primer punch which may be slightly longer, or you can epoxy (or use double sided tape to test) a piece of soda can shim stock on the frame of the press where the punch contacts during priming.

You can try winchester or federal primers if you are using CCI.
__________________
The difference between Democrats and Republicans is like the difference between a poop sandwich, and a poop Sandwich with mustard.
Master Blaster is offline  
Old July 23, 2009, 08:18 AM   #9
impactco
Senior Member
 
Join Date: January 12, 2008
Posts: 102
I had Hornady send me a new primer punch and it was identical length, so no improvement there. I used a .015" steel feeler gauge and glued it to the press frame where the punch contacts and this helped a little. Like I said, using Federal or Winchester primers solved my seating woes. I can still use CCI if I prime off press using the RCBS Bench priming tool.
impactco is offline  
Old March 29, 2010, 07:22 PM   #10
Zenates
Junior Member
 
Join Date: March 29, 2010
Posts: 1
The issue is mainly with the manufacturing process Hornady uses to build its press, mainly the frame itself. The frame is cast, and then most likely painted, and finally machined in all the places they deem it critical. The place just under where the primer seater punch (part#26 in LNL Manual) sits is not deemed critical enough to machine flat, and for some other reason the seater pin itself is machined to a point. So what you end up with is a critical machined part (the pin) using red paint and rough cast iron for a depth stop.

The same red paint and rough casting is what the nut (also included in part #26) rests on when it physically stops the lever arm from rotating when you are pushing forward on it to seat the primer.

During use, you will wear off paint, and it will eventually change your primer seating depth.

Hornady could fix this by machining a flat spot in the frame where the nut and pin contact it, and making the pin itself flat on the bottom, instead of pointed.


Few things for you to try here, method 1 worked for me:

Method 1: Put a drop of superglue in the divot created by the bottom (pointy) side of the primer seating pin. If its too much glue and it has made the primer seat to deeply, simply remove glue with acetone and a rag until it seats to the desired depth. (Be careful with acetone, it may remove paint as well.) !!!!!MAKE SURE THE GLUE IS DRY BEFORE YOU CYCLE THE PRESS!!!!!

Method 2: Use a mill or file to remove about .003 thickness from the part of the nut that contacts the frame. This is what I was going to try if the superglue had not worked.
Zenates 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 04:58 PM.


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 0.07772 seconds with 7 queries