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Joined: Aug 2006
Posts: 983
Campfire Regular
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OP
Campfire Regular
Joined: Aug 2006
Posts: 983 |
I'm sure this has been asked but.... Is it better to neck up 243 (got lots) or neck down 7-08's (few dozen) and no rifle for either. Thanks- Muddy
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Joined: Aug 2002
Posts: 19,132 Likes: 5
Campfire Ranger
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Campfire Ranger
Joined: Aug 2002
Posts: 19,132 Likes: 5 |
I would use the one that I had the most of. Lee dies have a very tapered expander button and neck size things up real easy. In fact, I bought a .30 caliber lee decap and expander and used it in my Lee universal decapper to bring .270 up to .30 cal and then partial neck sized it back down to .284 to create a false shoulder when making .280 RCBS brass. Worked real well but wish I had turned it down a little so as to not work the brass as much. miles
Look out for number 1, don't step in number 2.
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Joined: Jan 2007
Posts: 527
Campfire Regular
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Campfire Regular
Joined: Jan 2007
Posts: 527 |
I have necked up 243 brass by resizing thru a 260 Rem RCBS full length die without problems. Never have used any 7-08 brass to neck down.
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Joined: Aug 2006
Posts: 983
Campfire Regular
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OP
Campfire Regular
Joined: Aug 2006
Posts: 983 |
Reason I asked is about neck wall thickness and/or the dreaded donut.-Muddy
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Joined: Feb 2009
Posts: 11,924
Campfire Outfitter
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Campfire Outfitter
Joined: Feb 2009
Posts: 11,924 |
I have only done about 50 so far but i used some military 308 brass.
Have not shot them yet but they measure right in all the right places,no donuts yet.
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Joined: Dec 2001
Posts: 3,875
Campfire Tracker
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Campfire Tracker
Joined: Dec 2001
Posts: 3,875 |
7-08 is better ,but both can be done. Better being the neck is longer on 243 and may be tight.
Good Shooting!
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Joined: Aug 2008
Posts: 2,259
Campfire Regular
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Campfire Regular
Joined: Aug 2008
Posts: 2,259 |
Neck down 7-08. I've done a couple thou WW 7-08 cases over the years and have nothing but good results. Necking up is likely to result in a donut.
RLTW
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Joined: Feb 2001
Posts: 4,571
Campfire Tracker
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Campfire Tracker
Joined: Feb 2001
Posts: 4,571 |
I've necked down 7/08 and .308 to .260... both work equally well. I've necked up .243 brass too... and it also worked, though it required trimming before loading them up.
Best way I've found to make .260 brass.... is to reach in the blue box marked "Lapua .260" and pull some out....
Last edited by Dogshooter; 06/12/16.
You better pray to the God of Skinny Punks that this wind doesn't pick up......
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Joined: Apr 2004
Posts: 42,936 Likes: 16
Campfire 'Bwana
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Campfire 'Bwana
Joined: Apr 2004
Posts: 42,936 Likes: 16 |
I've had 260s since they came out...bought ONE bag of Rem 260 Brass, and it was crap... haven't used it since...
I've ran down plenty of 308 brass to 260 with zero problems as I ended up with it for free as range brass..
have necked down Win 7/08 and Lapua 7/08 brass to 260 with zero issues...
I've necked UP 243 brass just to see and it worked fine...
But no more than that with the 243... as I shoot plenty of 243, not much 7/08 and NO 308...leave the 243 brass to the 243s... don't want it mixed up....
got 5 chambered for 260s
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