Forums46
Topics538,050
Posts9,732,362
Members87,055
|
Most Online25,604 Feb 12th, 2024
|
|
|
Case head separation signs?
#6107311
12/29/15 03:47 AM
|
Joined: Nov 2010
Posts: 5,275
jeepercreeper
OP
THF Trophy Hunter
|
OP
THF Trophy Hunter
Joined: Nov 2010
Posts: 5,275 |
Just FL resized some brass with brand new Lee dies and noticed a ring at the base of the brass. I think this is simply where the die resizing stops but i dont see this with my other dies and brass after a FL resize. This is all once-fired Hornady brass out of a bolt gun. First time Ive worked with factory Hornady brass. Thinking about running a paper clip and/or cutting a couple cases to see what the inside looks like. Please excuse the dirty brass. Hasnt been cleaned yet
|
|
|
Re: Case head separation signs?
[Re: jeepercreeper]
#6107323
12/29/15 03:52 AM
|
Joined: Nov 2007
Posts: 9,523
RiverRider
THF Trophy Hunter
|
THF Trophy Hunter
Joined: Nov 2007
Posts: 9,523 |
I'd check it. Looks like the bright ring of doom to me, but hard to be sure looking at a photo.
"Arguing with you always makes me thirsty." -Augustus McRae
|
|
|
Re: Case head separation signs?
[Re: RiverRider]
#6107330
12/29/15 03:56 AM
|
Joined: Nov 2010
Posts: 5,275
jeepercreeper
OP
THF Trophy Hunter
|
OP
THF Trophy Hunter
Joined: Nov 2010
Posts: 5,275 |
I'd check it. Looks like the bright ring of doom to me, but hard to be sure looking at a photo. Uggghhh. I just resized about 50rds and 45 of them look like this. These are all once fired too!
|
|
|
Re: Case head separation signs?
[Re: jeepercreeper]
#6107365
12/29/15 04:14 AM
|
Joined: May 2011
Posts: 899
jeff1383
Tracker
|
Tracker
Joined: May 2011
Posts: 899 |
If they're once fired I seriously doubt you're seeing case head separation unless you've got a chamber with waaaay too much headspace
|
|
|
Re: Case head separation signs?
[Re: jeepercreeper]
#6107374
12/29/15 04:16 AM
|
Joined: Nov 2007
Posts: 9,523
RiverRider
THF Trophy Hunter
|
THF Trophy Hunter
Joined: Nov 2007
Posts: 9,523 |
I know exactly what you mean. You know how to check em with a bent paperclip, though. They may be fine. And I could be just wrong about how they look. I'd expect the bright band to be a little wider, but...so I'd check.
"Arguing with you always makes me thirsty." -Augustus McRae
|
|
|
Re: Case head separation signs?
[Re: jeepercreeper]
#6107712
12/29/15 02:24 PM
|
Joined: Nov 2010
Posts: 5,275
jeepercreeper
OP
THF Trophy Hunter
|
OP
THF Trophy Hunter
Joined: Nov 2010
Posts: 5,275 |
I'm gonna go ahead and cut a couple and check them out. I value the gun (and my face) way more than a few pieces of brass.
|
|
|
Re: Case head separation signs?
[Re: jeff1383]
#6107831
12/29/15 03:44 PM
|
Joined: Aug 2013
Posts: 2,072
cabosandinh
Veteran Tracker
|
Veteran Tracker
Joined: Aug 2013
Posts: 2,072 |
If they're once fired I seriously doubt you're seeing case head separation unless you've got a chamber with waaaay too much headspace This or was hot load that caused case to expand out of normal
|
|
|
Re: Case head separation signs?
[Re: jeepercreeper]
#6107996
12/29/15 05:23 PM
|
Joined: Nov 2007
Posts: 9,523
RiverRider
THF Trophy Hunter
|
THF Trophy Hunter
Joined: Nov 2007
Posts: 9,523 |
What cartridge are they, and what rifle were they fired in?
"Arguing with you always makes me thirsty." -Augustus McRae
|
|
|
Re: Case head separation signs?
[Re: RiverRider]
#6108083
12/29/15 06:28 PM
|
Joined: Nov 2010
Posts: 5,275
jeepercreeper
OP
THF Trophy Hunter
|
OP
THF Trophy Hunter
Joined: Nov 2010
Posts: 5,275 |
What cartridge are they, and what rifle were they fired in? Oops, I guess I should have mentioned that. Hornady 130gr SST 270win out of a Sako A7.
|
|
|
Re: Case head separation signs?
[Re: jeepercreeper]
#6108979
12/30/15 03:35 AM
|
Joined: Nov 2010
Posts: 5,275
jeepercreeper
OP
THF Trophy Hunter
|
OP
THF Trophy Hunter
Joined: Nov 2010
Posts: 5,275 |
Ran paper clip through about 10 cases and not feeling anything. Also cut a couple cases and doesnt look bad to me. What do you guys think? Just resizing marks?
|
|
|
Re: Case head separation signs?
[Re: jeepercreeper]
#6108989
12/30/15 03:39 AM
|
Joined: Nov 2007
Posts: 9,523
RiverRider
THF Trophy Hunter
|
THF Trophy Hunter
Joined: Nov 2007
Posts: 9,523 |
Looks fine.
That line is just about always there after sizing a rifle case, but usually it's not so bright. Fooled us both, it did.
Better to err on the side of caution than the alternative, though.
"Arguing with you always makes me thirsty." -Augustus McRae
|
|
|
Re: Case head separation signs?
[Re: jeepercreeper]
#6109031
12/30/15 04:03 AM
|
Joined: Nov 2010
Posts: 5,275
jeepercreeper
OP
THF Trophy Hunter
|
OP
THF Trophy Hunter
Joined: Nov 2010
Posts: 5,275 |
Yeah it certainly had me second guessing with the ring being so bright. We'll see how the rings look after the tumbler.
|
|
|
Re: Case head separation signs?
[Re: jeepercreeper]
#6109081
12/30/15 04:45 AM
|
Joined: Sep 2009
Posts: 18,954
ChadTRG42
THF Celebrity
|
THF Celebrity
Joined: Sep 2009
Posts: 18,954 |
Yes, I get the bright line at the case head sometimes after FL sizing. When you have actual case head separation signs, there will be a slight concave look at the case head area (where you see the shiny line). My 300 WM Nosler brass has MULTIPLE reloads on the brass from many firings through 2 different chambers. The last time I FL sized them I noticed the concave look at the webbing. Some of the rounds I shot had case head separation. But I'm running a 225 BTHP at 2911 fps! You will see the concave look and some stretching in that area. It does look similar to what you have now, but more severe.
|
|
|
Re: Case head separation signs?
[Re: jeepercreeper]
#6109834
12/30/15 06:38 PM
|
Joined: May 2007
Posts: 1,225
papa45
Pro Tracker
|
Pro Tracker
Joined: May 2007
Posts: 1,225 |
Agree with River Rider. I always see that line on my brass, but not so bright, probably because I resize after tumbling. Also, in my experience, a case-head-separation line is usually a little higher, wider, and not so shiny as the one you are seeing (may depend on the brass.)
Last edited by papa45; 12/30/15 06:40 PM.
|
|
|
Re: Case head separation signs?
[Re: jeepercreeper]
#6112384
01/01/16 02:16 AM
|
Joined: May 2011
Posts: 899
jeff1383
Tracker
|
Tracker
Joined: May 2011
Posts: 899 |
Use a little more case lube also
|
|
|
Re: Case head separation signs?
[Re: jeepercreeper]
#6142563
01/19/16 06:17 AM
|
Joined: Jun 2013
Posts: 526
Junior Samples
Tracker
|
Tracker
Joined: Jun 2013
Posts: 526 |
Had the same symptom with sizing cases. I think it is time to clean my die? Could that be a dirty die? Well, with some dirt piling up on the rim of the die, pass after pass, over the spent cases. The rim of the die, at bottom of the sizing stroke, is pressed against the tension of the unsized portion of the case, against that very edge, then turned back against the dirt trapped at the rim, upon extraction. Case taper immediately reliefs that tension, printing a thin ring. I liked the cut-away pic. thanks
Last edited by Junior Samples; 01/19/16 06:20 AM.
|
|
|
Moderated by bigbob_ftw, CCBIRDDOGMAN, Chickenman, Derek, DeRico, Duck_Hunter, hetman, jeh7mmmag, JustWingem, kmon11, kry226, kwrhuntinglab, Payne, pertnear, rifleman, sig226fan (Rguns.com), Superduty, TreeBass, txcornhusker
|