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tlo7mm Super Member
Joined: Nov 15, 2010 Posts: 426 Location: Oregon
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Posted: Sat Jul 14, 2012 11:12 pm Post subject: Possibly a dumb question |
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So I have been loading for 30-40 krag and I am experiencing some stuff that I find a little strange. When I am seating bullets periodically my brass actually caves in at the shoulder. The first time I experienced this I had the crimp set wrong but I have since readjusted and have ran about 30 rounds through the die with no issues. The last couple I ran through the die came out either bent or the shoulder caved in. The die is a hornady die. Does this sound like bad brass or a die problem? Or perhaps something I am doing wrong?
_________________ "If someone has a gun and is trying to kill you, it would be reasonable to shoot back with your own gun." ~ The Dalai Lama
Never ascribe to malice that which is adequately explained by incompetence. - Napoleon Bonaparte
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1895ss Super Member
Joined: Jul 21, 2005 Posts: 2612 Location: Not Here...!!
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Posted: Sun Jul 15, 2012 1:54 am Post subject: Re: Possibly a dumb question |
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Is your brass getting too long from firing and resizing and in need of trimming to proper length?
_________________ A cruel truth is much more desirable than a really nice lie.
'Tis far better to walk alone than to follow a crowd or an a**hole going the wrong way. |
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moose2 Super Member
Joined: Mar 19, 2005 Posts: 707 Location: North Idaho
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Posted: Sun Jul 15, 2012 2:13 am Post subject: Re: Possibly a dumb question |
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Here's a couple of other possibilities. For one, you might be over lubricating the brass. This can cause denting of the brass. And second, your dies may need to be cleaned. Most dies have a vent hole in the threads that lets air escape. If its plugged, this could cause some denting of the brass also.
_________________ tr |
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Grumulkin Super Member
Joined: Apr 16, 2007 Posts: 365 Location: Central Ohio
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Posted: Sun Jul 15, 2012 3:28 am Post subject: Re: Possibly a dumb question |
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From your post, I understand the problem occurs with your seating die. First of all, you shouldn't have to crimp a 30-40 Krag but if you must, get a Lee Factory Crimp Die and the problem should go away. The reason some are collapsed and some aren't is probably because some cases are a little longer than others. Also, make sure you have chamfered the mouth of all your cases.
If the above doesn't help, then your sizing die is probably sizing the neck a little too much.
If the problem occurs during sizing, then dented shoulders are generally caused by too much lube.
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Bushmaster Super Member
Joined: Jun 12, 2005 Posts: 11393 Location: Ava, Missouri
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Posted: Sun Jul 15, 2012 8:31 am Post subject: Re: Possibly a dumb question |
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Most seating/crimping dies tend to push the bullet in a few thousands of an inch as the crimp starts. If the crimp is set too short it will crimp the bullet then try to push the bullet in causing the collapsed shoulder. This can be adjusted for as you have found out.
The best remedy for this is the Lee Factory Crimp Die (FCD).
_________________ I have one nerve left and yer standin' on it...
DEMOCRACY Two wolves and one sheep voting on what to have for lunch...
LIBERTY A well armed sheep contesting the outcome of the vote... |
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SingleShotLover Super Member
Joined: Dec 26, 2007 Posts: 1005 Location: Illinois
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Posted: Sun Jul 15, 2012 9:50 am Post subject: Re: Possibly a dumb question |
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I agree with all of the above, but especially about the crimping. The 30-40 shouldn't need a crimp and that appears to be one of the points you mention. As Bushmaster said, your die is attempting to crimp as the bullet is being seated that last couple of thousandths of an inch which causes a lot of case-neck stress. I would back the seating die out until no crimp is present, re-adjust the seating stem to seat the bullets to length and load without crimping. There really shouldn't be a problem.
_________________ If you can't hit it with one, you probably can't with two either!
The biggest problem with a closed mind is that it never seems to come with a closed mouth.
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PaulS Super Member
Joined: Feb 18, 2006 Posts: 4330 Location: South-Eastern Washington - the State
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Posted: Sun Jul 15, 2012 9:13 pm Post subject: Re: Possibly a dumb question |
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Try backing the die out of thepress 1 turn and reset your seating plug a bit lower (to compensate for the die being away from the shell holder).
I have never crimped my 3006 rounds and have never had a problem.
_________________ Paul
__________________
Speer, Lyman, Hodgdon, Sierra, and Hornady = reliable loading data
So and So's pages on the internet = NOT reliable loading data
Always check data against manuals
NEVER exceed maximum listed loads |
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Elvis Super Member
Joined: Jul 27, 2008 Posts: 9256 Location: south island New Zealand
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Posted: Sun Jul 15, 2012 11:45 pm Post subject: Re: Possibly a dumb question |
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I agree with all the above but will add one other point
the ONLY dumb question is the one you should ask but dont!!
Its far better to ask and find out than continue as make a bigger stuff up.
_________________ You shot it You pluck it !
Them who eats the most duck eats the most feathers! |
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Bushmaster Super Member
Joined: Jun 12, 2005 Posts: 11393 Location: Ava, Missouri
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Posted: Mon Jul 16, 2012 6:49 am Post subject: Re: Possibly a dumb question |
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Aah Elvis, the "philosopher"....
Good Morning all.....
_________________ I have one nerve left and yer standin' on it...
DEMOCRACY Two wolves and one sheep voting on what to have for lunch...
LIBERTY A well armed sheep contesting the outcome of the vote... |
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Suzanne Super Member
Joined: Jun 27, 2009 Posts: 3323 Location: Eugene, Oregon
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Posted: Mon Jul 16, 2012 6:44 pm Post subject: Re: Possibly a dumb question |
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Mommy why does daddy run to the bathroom all scrunched up as soon as he wakes up?
just sayin
Suz
_________________ May the moon keep you centered,
May the sun keep you dancing,
And the stars shed light on your dreams. |
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TRBLSHTR Super Member
Joined: Mar 23, 2007 Posts: 1071 Location: Lower 48's-left coast(near portlandia)
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Bushmaster Super Member
Joined: Jun 12, 2005 Posts: 11393 Location: Ava, Missouri
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Posted: Mon Jul 16, 2012 9:21 pm Post subject: Re: Possibly a dumb question |
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Probably...She sure as hell has something in a bunch though
_________________ I have one nerve left and yer standin' on it...
DEMOCRACY Two wolves and one sheep voting on what to have for lunch...
LIBERTY A well armed sheep contesting the outcome of the vote... |
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