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Joined: Aug 2007
Posts: 510
Campfire Regular
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OP
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Load development for my 243. Loaded twelve and two wouldn’t chamber.....the case mushed. No idea why this happened. Any clue? Pictures. 243 case pics
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Joined: Oct 2009
Posts: 673
Campfire Regular
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Campfire Regular
Joined: Oct 2009
Posts: 673 |
Your seating die was screwed down too far. Unscrew it a couple turns then drop the seating stem until you achieve the OAL you want
Huntinut
"If it's the truth it ain't braggin" Will Rogers
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Joined: Dec 2004
Posts: 14,488
Campfire Outfitter
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Campfire Outfitter
Joined: Dec 2004
Posts: 14,488 |
Your seating die was screwed down too far. Unscrew it a couple turns then drop the seating stem until you achieve the OAL you want What's probably happening is that the case mouth is getting crimped before the ram has gone all the way up, so the neck and bullet cannot go up into the die any further resulting in shoulder collapse. Huntinut's suggestion is the way to correct that. In fact, if it were me I wouldn't want the die applying ANY crimp at all on the case neck. Crimping is just not necessary most often.
Don't be the darkness.
America will perish while those who should be standing guard are satisfying their lusts.
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Joined: Aug 2007
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Campfire Regular
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Campfire Regular
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I’ve never purposely crimped anything in my life....don’t reload anything that requires it. Been loading for this 243 with these dies for a while without any issue.......wonder if my 4 year old got a hold of it and started spinning !
Still doesn’t explain why this happened to only 2 / 12? I get the dies out and look into this further tomorrow
Last edited by DrGnarr; 12/30/20.
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Joined: Jun 2009
Posts: 3,188
Campfire Tracker
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Campfire Tracker
Joined: Jun 2009
Posts: 3,188 |
The 2 cases were probably longer than the other, thus applying more crimp. To adjust the seating due body, I usually place a case of the correct length in the shell holder and raise the ram. Then thread the seating die in until it just stops (now touching the case mouth). Then back the die out 1 full turn and set the lock ring.
Stuck in airports, Terrorized
Sent to meetings, Hypnotized
Over-exposed, Commercialized
Handle me with Care...
-Traveling Wilbury's
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Joined: Apr 2013
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Campfire Outfitter
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Campfire Outfitter
Joined: Apr 2013
Posts: 14,044 Likes: 1 |
The 2 cases were probably longer than the other, thus applying more crimp. To adjust the seating due body, I usually place a case of the correct length in the shell holder and raise the ram. Then thread the seating die in until it just stops (now touching the case mouth). Then back the die out 1 full turn and set the lock ring. This! One heck of a crimp on those
the consolidation of the states into one vast republic, sure to be aggressive abroad and despotic at home, will be the certain precursor of that ruin which has overwhelmed all those that have preceded. Robert E Lee
~Molɔ̀ːn Labé Skýla~
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Joined: Dec 2020
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New Member
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New Member
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Joined: Aug 2007
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Think you all got it
Last edited by DrGnarr; 12/31/20.
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Joined: Sep 2008
Posts: 5,733
Campfire Tracker
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Campfire Tracker
Joined: Sep 2008
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2 of 12 makes me think about trimming them all to the same length.
"Camping places fix themselves in your mind as if you had spent long periods of your life in them.
You will remember a curve of your wagon track in the grass of the plain like the features of a friend."
Isak Dinesen
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Joined: Apr 2011
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Campfire Savant
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Campfire Savant
Joined: Apr 2011
Posts: 151,725 Likes: 14 |
The only brass I trim is 223 brass, I think your die isn’t adjusted properly. If I was going to crimp, I would use lee crimp dies.
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