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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
New .338 lanches a 300gr Sierra MK at 3500fps?
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<blockquote data-quote="Steve Shelp" data-source="post: 21908" data-attributes="member: 22"><p>Brent,</p><p> I'll double check the (2) 338/378 cases I have. Going by memory today. So I'll make sure but I'm positive they were in the mid 130's. I use the drop of dish soap also and right even with the top of the mouth. The sizing of the cases will make a +-1gr difference roughly, but not the 10gr difference we're seeing right now.</p><p></p><p><strong>Steve, any idea of case capacity in the improved 338/378 Weatherby?</strong> I would have to lay it out in AutoCAD and measure the volume increase. Will let you know. Roughly though my 338 Lapua Improvd is a 7% increase, and that shoulder was moved forward .050" and sharpened slightly. The diameters are very similar so that would be a rough guideline to go by. </p><p></p><p>Nothing wrong with the 338/378 as long as your familiar with and aware of the belt issue with the Norma brass. You can always cut off part of the old chamber and rechamber later on to what ever you want. In the meantime you would be shooting a very potent case in the 338/378 and having a ball with the benefits you already noted. </p><p></p><p>Keep in touch with what you find out about the H2O volume of your brothers cases.</p><p></p><p>Steve</p><p></p><p>[ 02-15-2002: Message edited by: Steve Shelp ]</p></blockquote><p></p>
[QUOTE="Steve Shelp, post: 21908, member: 22"] Brent, I'll double check the (2) 338/378 cases I have. Going by memory today. So I'll make sure but I'm positive they were in the mid 130's. I use the drop of dish soap also and right even with the top of the mouth. The sizing of the cases will make a +-1gr difference roughly, but not the 10gr difference we're seeing right now. [B]Steve, any idea of case capacity in the improved 338/378 Weatherby?[/B] I would have to lay it out in AutoCAD and measure the volume increase. Will let you know. Roughly though my 338 Lapua Improvd is a 7% increase, and that shoulder was moved forward .050" and sharpened slightly. The diameters are very similar so that would be a rough guideline to go by. Nothing wrong with the 338/378 as long as your familiar with and aware of the belt issue with the Norma brass. You can always cut off part of the old chamber and rechamber later on to what ever you want. In the meantime you would be shooting a very potent case in the 338/378 and having a ball with the benefits you already noted. Keep in touch with what you find out about the H2O volume of your brothers cases. Steve [ 02-15-2002: Message edited by: Steve Shelp ] [/QUOTE]
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New .338 lanches a 300gr Sierra MK at 3500fps?
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