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10-31-2016, 07:00 PM
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Join Date: May 2007
Location: Fort Sask, AB
Posts: 4,910
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Tight brass
I have a doz 7mmRM that will just not properly chamber, bolt barely turns.
These have been thru the same die that proper fitting casings have gone thru.
I re trimmed them and ensured they were under max COAL.
Die is set proper too, touching the holder plus 1/3 turn more.
All looks ok, no puckers or crushed necks that I can see.
Primers are seated properly. These are the last ones I've run too.
Any ideas as to what the problem is ? Could the die itself (Lee) have issues ?
TBark
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10-31-2016, 07:20 PM
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Join Date: Dec 2008
Location: Camrose
Posts: 44,842
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Just a guess, but were they fired in a different rifle?
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Only accurate guns are interesting.
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10-31-2016, 07:26 PM
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Join Date: Jun 2007
Location: Ft. McMurray
Posts: 38,530
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Had an issue about 20 years ago with a 300 that would not accept brass FL'd in Lee dies . Tried my RCBS dies and everything was fine.
Turns out a combination of slightly larger components .
Try some different dies.
Cat
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Anytime I figure I've got this long range thing figured out, I just strap into the sling and irons and remind myself that I don't!
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10-31-2016, 07:34 PM
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Join Date: Sep 2015
Posts: 1,816
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Were they loads that were hot ? May have gone past their elastic limit
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10-31-2016, 07:41 PM
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Join Date: Nov 2013
Posts: 323
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I agree with Cat. Could be your die is not getting down far enough to squeeze just above the belt. I had virtually the same issue with my 7mm mag and ended up buying a belted magnum collet resizing die from larrywillis.com.
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10-31-2016, 07:52 PM
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Join Date: May 2007
Location: Fort Sask, AB
Posts: 4,910
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Thanks guys, same rifle, second run of once fired casings.
Not loaded too hot, a few gn below recommended max in loading data.
I'll run them again, I'll pull the primer pin and get it down to the belt for sure.
A buddy just tells me he has dies I can use if I need them.
TBark
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10-31-2016, 07:56 PM
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Join Date: Sep 2008
Location: Parkland County, AB
Posts: 4,249
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Quote:
Originally Posted by Deezel
I agree with Cat. Could be your die is not getting down far enough to squeeze just above the belt. I had virtually the same issue with my 7mm mag and ended up buying a belted magnum collet resizing die from larrywillis.com.
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This nailed it ! Eventually all belted cases will require the Larry Willis treatment. I have not ran across a typical re-sizing die that will do it.
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When applied by competent people with the right intent, common sense goes a long way.
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10-31-2016, 08:05 PM
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Join Date: Dec 2008
Location: Camrose
Posts: 44,842
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I generally run my belted magnum cases 6 to 8 loadings and toss them, and so far, I have never had an issue using RCBS or Redding dies. I could likely get more, but I don't take chances with my hunting loads. On the other hand, I typically get 15 or more loadings out of my non belted Lapua cases. I always start with new cases, and only use them in one rifle.
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Only accurate guns are interesting.
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10-31-2016, 09:50 PM
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Join Date: Jun 2011
Location: boyle,ab
Posts: 739
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Quote:
Originally Posted by Salavee
This nailed it ! Eventually all belted cases will require the Larry Willis treatment. I have not ran across a typical re-sizing die that will do it.
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why don't you try shaving a couple of thou off the top of your shellholder at your local machinist. i dont think they are hardened.
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10-31-2016, 09:54 PM
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Join Date: May 2007
Posts: 15,777
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Quote:
Originally Posted by barsik
why don't you try shaving a couple of thou off the top of your shellholder at your local machinist. i dont think they are hardened.
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They are harder than woodpecker lips.
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10-31-2016, 10:00 PM
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Join Date: May 2007
Location: Fort Sask, AB
Posts: 4,910
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My fault guys, there was a hair of room left to press the brass into the die.
Poor lighting in my bench area, I'll take care of that.
Chambers well now. Belts were on spec.
Thanks again,
TBark
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10-31-2016, 10:00 PM
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Join Date: Dec 2008
Location: Camrose
Posts: 44,842
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I guess that you didn't have 1/3 turn of preload after all.
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Only accurate guns are interesting.
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10-31-2016, 10:05 PM
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Join Date: Jun 2007
Location: Ft. McMurray
Posts: 38,530
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Quote:
Originally Posted by TBark
My fault guys, there was a hair of room left to press the brass into the die.
Poor lighting in my bench area, I'll take care of that.
Chambers well now. Belts were on spec.
Thanks again,
TBark
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Well, that was an easy fix!
Cat
__________________
Anytime I figure I've got this long range thing figured out, I just strap into the sling and irons and remind myself that I don't!
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10-31-2016, 10:07 PM
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Join Date: Dec 2013
Location: In your personal space.
Posts: 4,787
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Dont sweat it, everyone has a moment of oops once in a while. I short sized 200 pieces of brass last month.
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When in doubt, use full throttle. It may not improve the situation, but it will end the suspense.
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