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Old 12-08-2009, 08:54 PM
ohnomrbillk ohnomrbillk is offline
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Join Date: Apr 2009
Posts: 78
This is what I have from Cartridges of the world. Not sure on accuracy.

Cartridge: 338 Whisper
Case Type: C=rimless, bottleneck
Bullet Diameter: 0.338
Neck Diameter: 0.360
Shoulder Diameter: 0.457
Base Diameter: 0.463
Rim Diameter: 0.466
Rim Thickness: 0.048
Cartridge Length: V=various versions exist
Twist: V=various versions exist
Case Length: 1.47
Primer: small

Feel free to agree or disagree on any of the above. If anyone has a chamber print, I'd be in debt to you.
Bill
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