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  #1  
Old 09-11-2005, 01:59 PM
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Join Date: Oct 2004
Location: central Kentucky
Posts: 50
.25 Tcu


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Does anyone here have any experience with the .25 TCU (.223 rem case necked up for .257 bullets) in rifles? Any info is welcome, even Contender related, but I am really looking for rifle tales. Bullets, powders, barrel length, headaches, etc. Thanks!
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Last edited by rockfarmer; 09-11-2005 at 02:05 PM.
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  #2  
Old 09-13-2005, 03:43 PM
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Join Date: Jul 2003
Location: Republic of Texas
Posts: 744
You can use Hornady 6mmTCU data for same weight bullets. Rifle speeds will only be between 10-15% higher than shown since Hornady already uses a 14" barrel rather than a 10". Sorry, no experience with a rifle barrel. The .25 will handle 85-100gr bullets a little better than the 6 but not as well as the 6.5 or 7. A number of us would be interested in your rifle results. One warning- do not use .257 Kimber data. It is based on the .222 MAG case with the shoulder blown forward, making it a good bit larger case.
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  #3  
Old 10-29-2005, 06:34 PM
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Join Date: Oct 2004
Location: New York
Posts: 111
If you are shooting the 257 T/CU in a Contender rifle, because of the unusually long throat, I would rechamber it for the longer 222 Rem. Mag. case and you could still use the same dies you are using now. They would just need to be backed off the shell holder some 1/2 to 3/4 turn because of the longer case. Also, this would allow for a shorter throat to be cut to where the lighter weight bullets could be seated closer to the rifling....

D-A
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  #4  
Old 11-28-2005, 07:34 AM
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Join Date: Mar 2003
Location: NE PA
Posts: 14
21" contender custom shop barrel--Long throat, 2.650" C.O.A.L. with 117 Horn SST.
30gr W748, 100gr Sierra FB --2650fps
24.5gr IMR 4198 85gr Nosler BT--2800fps
28.5 gr RL 15 117 Horn. SST--2500FPS

All max loads, all MOA or better in my gun.
Most excellent cartridge!
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