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Joined: Mar 2009
Posts: 1,676
Campfire Regular
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Campfire Regular
Joined: Mar 2009
Posts: 1,676 |
The Lee Colette Factory Crimp die applies uniform neck tension to each round and thus removes one vexing variable from the accuracy equation. But, make no mistake, the Factory Crimp is adding neck tension. You can set a Lee Factory Crimp die so it pressure forms a cannelure where there wasn't one in your loaded bullet. When we speak of neck tension we are speaking of the tension below the crimp on the bullet. OK. Time for my lesson then. Why crimp at all? The expander plug should be set so as to only expand the case mouth edge as to not shave lead when the bullet is seated. If the case mouth is expanded too much you will lose case tension below the crimp. The bullet should expand the case as it is seated, so as to see the outline of the bullet in the brass. The crimp is not a replacement to good even neck tension, for heavy recoiling revolvers. Thank you John, exactly right.
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Joined: Feb 2012
Posts: 1,450
Campfire Regular
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Campfire Regular
Joined: Feb 2012
Posts: 1,450 |
My hornady .44 Mag carbide dies resize just enough to not shave lead when the bullet is pressed in, I have found no need to expand the mouth.....same as my RCBS Carbide .41 Mag dies.....I have a 357PD and have ran hundreds of rounds pushing 210s at over 1200 and I have not had the bullet jump crimp.....I have found little reason to ever use an expander.....decent roll crip and no issues
I predict future happiness for Americans if they can prevent the government from wasting the labors of the people under the pretense of taking care of them. -Thomas Jefferson
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Joined: Dec 2002
Posts: 22,274
Campfire Ranger
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Campfire Ranger
Joined: Dec 2002
Posts: 22,274 |
On my .44 mag dies, I've ground down the expander plug, so all it does is bell the mouth.
Dave Scovil published an article some years ago in Handloader, where he found that a tight bullet fit AND a firm crimp, gave the best accuracy, and least velocity variation.
"...the designer of the .270 Ingwe cartridge!..."
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Joined: Jun 2005
Posts: 27,500
Campfire Ranger
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OP
Campfire Ranger
Joined: Jun 2005
Posts: 27,500 |
Helpful pointers here, Thanks to all of you who tossed in some ideas and suggestions. I have been reloading rifle cartridges for 45 years but I am a novice to handgun ammo reloading. I am hoping to make it out to the gun club this morning and try out my handloads made with the new dies as well as my "fixed" reloads that were slipping to see if my repair idea worked.
LOVE God, LOVE your family, LOVE your country, LIKE guns and sports.
About 2016 team "R" candidates "We definitely need a crew with a sack of balls the size of hot water bottles, bloviated estrogen leaking feel-gooders need not apply." Gunner 500
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