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338 edge?
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<blockquote data-quote="436" data-source="post: 429848" data-attributes="member: 16609"><p>Shawn,</p><p> Again sorry for any lack of understanding on my part; but I keep coming up with a case volume of some where around 110grs for the .300 RUM, and if your .338 Edge is "just a 300 RUM dimensions with a .364" neck ; your words." how are you getting 117.4grs of water as volume? The of course setting the bullet diminishes that is considerable. </p><p> </p><p> Your notes showing volume as you remember them.</p><p> </p><p> "I looked back throught my 338 Edge notes from 2001, April. I water weighed ( not took what a program suggested they had ) the following:</p><p></p><p><strong>338 Edge 117.4 gr</strong></p><p>338 Lapua 113.3 gr</p><p>338 Ultra 110.4 gr</p><p>340 WBY 101.0 gr</p><p>338 Win Mag 84.1 gr</p><p></p><p>Of H2O."</p><p> </p><p> <strong><a href="http://www.gmdr.com/lever/300RUMtext.htm" target="_blank">300 Rem Ultra Mag</a></strong></p><p> The case capacity of the 300 WSM is 80.4 gr (of water) full case, 72.9gr with a flat base bullet seated .400". In comparison the 300 Win Mag is 87.0gr and 82.1gr, respectively. Jamison's 300, with a .1" longer body measures: 82.0 and 74.4grs. Ballistically, given the improved volume to surface area, the 300 WSM essentially equals the Win Mag's performance even with its slightly smaller capacity. The 300 WSM is usable for any task the 300 Win Mag is capable of. Other cartridges of this class are: the 300 H&H Mag, 81.3 and 74.3gr; the 300 Wby, 91.0 and 83.5gr; 30 Newton 83.3 and 75.8gr. These are well short of the 30-378 (120gr, 112gr) <strong>or 300 RUM (110gr, 102gr) class cartridges</strong>.</p><p> Nominal bullet diameter is .308"; SAAMI lists the maximum pressure at 65kpsi.</p><p> </p><p> I would think unless you wildcatting the .300 RUM cartridge physic would dictate; it would hold very close to the original volume….. With you saying; yours is just a necked up .300 RUM'…, the aforementioned would seem to be correct. </p><p> </p><p> From what I can find on the .300 RUM and the .338 RUM'…, these number seem to be correct. See below. It would seem the .338 RUM did pick up 2.8grs of water by volume.</p><p> </p><p> <strong>.300 RUM</strong></p><p> Designer <a href="http://en.wikipedia.org/wiki/Remington_Arms_Company" target="_blank">Remington</a> Designed 1999</p><p> Parent <a href="http://en.wikipedia.org/wiki/Casing_%28ammunition%29" target="_blank">case</a> .404 Jeffery Case type Rimless, bottleneck <a href="http://en.wikipedia.org/wiki/Bullet" target="_blank">Bullet</a> diameter .308 in (7.8 mm) Neck diameter .344 in (8.7 mm) Shoulder diameter .525 in (13.3 mm) Base diameter .550 in (14.0 mm) Rim diameter .534 in (13.6 mm) Case length 2.850 in (72.4 mm) Overall length 3.600 in (91.4 mm) <strong>Case capacity 110.2 <a href="http://en.wikipedia.org/wiki/Grain_%28measure%29" target="_blank">gr</a> H2O</strong> (7.163 cm³) <a href="http://en.wikipedia.org/wiki/Rifling" target="_blank">Rifling</a> twist 1-10" <a href="http://en.wikipedia.org/wiki/Percussion_cap" target="_blank">Primer</a> type Large rifle magnum Maximum pressure 65,000 psi (450 MPa</p><p> </p><p> <strong>338 RUM</strong></p><p> Designer <a href="http://en.wikipedia.org/wiki/Remington_Arms_Company" target="_blank">Remington</a> Designed 2000</p><p> Parent <a href="http://en.wikipedia.org/wiki/Casing_%28ammunition%29" target="_blank">case</a> <a href="http://en.wikipedia.org/wiki/.300_Remington_Ultra_Magnum" target="_blank">.300 Remington Ultra Magnum</a> Case type Beltless, rebated, bottleneck <a href="http://en.wikipedia.org/wiki/Bullet" target="_blank">Bullet</a> diameter .338 in (8.6 mm) Neck diameter .371 in (9.4 mm) Shoulder diameter .5250 in (13.34 mm) Base diameter .5500 in (13.97 mm) Rim diameter .532 in (13.5 mm) Case length 2.850 in (72.4 mm) Overall length 3.600 in (91.4 mm) Case capacity 113 <a href="http://en.wikipedia.org/wiki/Grain_%28measure%29" target="_blank">gr</a> H2O (7.345 cm³) <a href="http://en.wikipedia.org/wiki/Rifling" target="_blank">Rifling</a> twist 1-10 in (254 mm) <a href="http://en.wikipedia.org/wiki/Percussion_cap" target="_blank">Primer</a> type Large rifle magnum Maximum pressure 65,000 psi (450 MPa)</p><p> </p><p> <strong>.338 Edge</strong></p><p> Designer Shawn Carlock Designed 2001</p><p> Parent <a href="http://en.wikipedia.org/wiki/Casing_%28ammunition%29" target="_blank">case</a> <a href="http://en.wikipedia.org/wiki/.300_Remington_Ultra_Magnum" target="_blank">.300 Remington Ultra Magnum</a> Case type Rimless, bottleneck <a href="http://en.wikipedia.org/wiki/Bullet" target="_blank">Bullet</a> diameter .338 in (8.6 mm) Neck diameter .371 in (9.4 mm) Shoulder diameter .525 in (13.3 mm) Base diameter .550 in (14.0 mm) Rim diameter .534 in (13.6 mm) Case length 2.850 in (72.4 mm) Overall length 3.600 in (91.4 mm) Case capacity 110.2 <a href="http://en.wikipedia.org/wiki/Grain_%28measure%29" target="_blank">gr</a> H2O (7.163 cm³) <a href="http://en.wikipedia.org/wiki/Percussion_cap" target="_blank">Primer</a> type Large rifle magnum</p><p> </p><p> </p><p> As a side note I have a call into a friend of mine Rick Johnson who was with Remington at the time these cartridges were under development; to obtain the true case volumes of the .300 and the .338 RUM if the above are incorrect.</p><p> </p><p> At any rate; perhaps these figure are skewed… I could really say... beings there the only one I could find.</p><p> Bottom line in my question is pretty much the same as in my first question; how does the .338 Edge pick up 7.4grs plus in its case?</p><p> </p><p> As for trim length of a case, which was brought up by another, that does nothing but keep the brass out of the throat, so I think that might be a moot point in case volume question.</p><p> </p><p> Thanks again for all your help.</p><p> Cheer</p><p> 436</p><p> </p><p> </p><p> </p><p> </p><p> <img src="http://file:///C:/DOCUME%7E1/Owner/LOCALS%7E1/Temp/msohtml1/03/clip_image002.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p> </p><p>[FONT=&quot]</p><p></p><p></p><p></p><p></p><p>[/FONT]</p></blockquote><p></p>
[QUOTE="436, post: 429848, member: 16609"] Shawn, Again sorry for any lack of understanding on my part; but I keep coming up with a case volume of some where around 110grs for the .300 RUM, and if your .338 Edge is “just a 300 RUM dimensions with a .364" neck ; your words.” how are you getting 117.4grs of water as volume? The of course setting the bullet diminishes that is considerable. Your notes showing volume as you remember them. “I looked back throught my 338 Edge notes from 2001, April. I water weighed ( not took what a program suggested they had ) the following: [B]338 Edge 117.4 gr[/B] 338 Lapua 113.3 gr 338 Ultra 110.4 gr 340 WBY 101.0 gr 338 Win Mag 84.1 gr Of H2O.” [B][url=http://www.gmdr.com/lever/300RUMtext.htm]300 Rem Ultra Mag[/url][/B] The case capacity of the 300 WSM is 80.4 gr (of water) full case, 72.9gr with a flat base bullet seated .400". In comparison the 300 Win Mag is 87.0gr and 82.1gr, respectively. Jamison's 300, with a .1" longer body measures: 82.0 and 74.4grs. Ballistically, given the improved volume to surface area, the 300 WSM essentially equals the Win Mag's performance even with its slightly smaller capacity. The 300 WSM is usable for any task the 300 Win Mag is capable of. Other cartridges of this class are: the 300 H&H Mag, 81.3 and 74.3gr; the 300 Wby, 91.0 and 83.5gr; 30 Newton 83.3 and 75.8gr. These are well short of the 30-378 (120gr, 112gr) [B]or 300 RUM (110gr, 102gr) class cartridges[/B]. Nominal bullet diameter is .308"; SAAMI lists the maximum pressure at 65kpsi. I would think unless you wildcatting the .300 RUM cartridge physic would dictate; it would hold very close to the original volume….. With you saying; yours is just a necked up .300 RUM’…, the aforementioned would seem to be correct. From what I can find on the .300 RUM and the .338 RUM’…, these number seem to be correct. See below. It would seem the .338 RUM did pick up 2.8grs of water by volume. [B].300 RUM[/B] Designer [URL="http://en.wikipedia.org/wiki/Remington_Arms_Company"]Remington[/URL] Designed 1999 Parent [URL="http://en.wikipedia.org/wiki/Casing_%28ammunition%29"]case[/URL] .404 Jeffery Case type Rimless, bottleneck [URL="http://en.wikipedia.org/wiki/Bullet"]Bullet[/URL] diameter .308 in (7.8 mm) Neck diameter .344 in (8.7 mm) Shoulder diameter .525 in (13.3 mm) Base diameter .550 in (14.0 mm) Rim diameter .534 in (13.6 mm) Case length 2.850 in (72.4 mm) Overall length 3.600 in (91.4 mm) [B]Case capacity 110.2 [URL="http://en.wikipedia.org/wiki/Grain_%28measure%29"]gr[/URL] H2O[/B] (7.163 cm³) [URL="http://en.wikipedia.org/wiki/Rifling"]Rifling[/URL] twist 1-10" [URL="http://en.wikipedia.org/wiki/Percussion_cap"]Primer[/URL] type Large rifle magnum Maximum pressure 65,000 psi (450 MPa [B]338 RUM[/B] Designer [URL="http://en.wikipedia.org/wiki/Remington_Arms_Company"]Remington[/URL] Designed 2000 Parent [URL="http://en.wikipedia.org/wiki/Casing_%28ammunition%29"]case[/URL] [URL="http://en.wikipedia.org/wiki/.300_Remington_Ultra_Magnum"].300 Remington Ultra Magnum[/URL] Case type Beltless, rebated, bottleneck [URL="http://en.wikipedia.org/wiki/Bullet"]Bullet[/URL] diameter .338 in (8.6 mm) Neck diameter .371 in (9.4 mm) Shoulder diameter .5250 in (13.34 mm) Base diameter .5500 in (13.97 mm) Rim diameter .532 in (13.5 mm) Case length 2.850 in (72.4 mm) Overall length 3.600 in (91.4 mm) Case capacity 113 [URL="http://en.wikipedia.org/wiki/Grain_%28measure%29"]gr[/URL] H2O (7.345 cm³) [URL="http://en.wikipedia.org/wiki/Rifling"]Rifling[/URL] twist 1-10 in (254 mm) [URL="http://en.wikipedia.org/wiki/Percussion_cap"]Primer[/URL] type Large rifle magnum Maximum pressure 65,000 psi (450 MPa) [B].338 Edge[/B] Designer Shawn Carlock Designed 2001 Parent [URL="http://en.wikipedia.org/wiki/Casing_%28ammunition%29"]case[/URL] [URL="http://en.wikipedia.org/wiki/.300_Remington_Ultra_Magnum"].300 Remington Ultra Magnum[/URL] Case type Rimless, bottleneck [URL="http://en.wikipedia.org/wiki/Bullet"]Bullet[/URL] diameter .338 in (8.6 mm) Neck diameter .371 in (9.4 mm) Shoulder diameter .525 in (13.3 mm) Base diameter .550 in (14.0 mm) Rim diameter .534 in (13.6 mm) Case length 2.850 in (72.4 mm) Overall length 3.600 in (91.4 mm) Case capacity 110.2 [URL="http://en.wikipedia.org/wiki/Grain_%28measure%29"]gr[/URL] H2O (7.163 cm³) [URL="http://en.wikipedia.org/wiki/Percussion_cap"]Primer[/URL] type Large rifle magnum As a side note I have a call into a friend of mine Rick Johnson who was with Remington at the time these cartridges were under development; to obtain the true case volumes of the .300 and the .338 RUM if the above are incorrect. At any rate; perhaps these figure are skewed… I could really say... beings there the only one I could find. Bottom line in my question is pretty much the same as in my first question; how does the .338 Edge pick up 7.4grs plus in its case? As for trim length of a case, which was brought up by another, that does nothing but keep the brass out of the throat, so I think that might be a moot point in case volume question. Thanks again for all your help. Cheer 436 [IMG]file:///C:/DOCUME%7E1/Owner/LOCALS%7E1/Temp/msohtml1/03/clip_image002.jpg[/IMG] [FONT="] [/FONT] [/QUOTE]
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