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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
3200 fps-300 smk
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<blockquote data-quote="Autorotate" data-source="post: 380506" data-attributes="member: 8073"><p>LTLR</p><p></p><p>Thanks for sharing. I'd be interested in learning:</p><p></p><p>1. How much freebore/throat this rifle was chambered with.</p><p>2. The water case capacity of the fired cases.</p><p>3. Maybe you have a picture of the case as compared to a standard 338-378 Wby case you could post...or email it to me, and I'll post it.</p><p>4. Same interest as posted above on the accuracy at these velocity levels</p><p></p><p>I was able to achieve 3100+ fps before pressure signs with the rifle listed below:</p><p></p><p>Weatherby Mark V </p><p>338 Excalibur w/.285 worth of freebore/parallel throat</p><p>31.25" Brux 9.8 twist</p><p>COAL was approx 4.185</p><p>(I'll get a more recent pic with the optics mounted and some more load development here a few weeks)</p><p></p><p>Accuracy came in around 122 grains of H50BMG at 3075-3082 fps with the 300 SMK.</p><p></p><p>The once fired cases hold right at 140 grains of water with a spent primer seated in reverse.</p><p></p><p>This case/bullet COAL combination starts to see powder compression at the 123.5 to 124 grain levels....with a 140 grain case and a long COAL.......this 338-378 Wby must be absolutely maxed out regarding case improvement...and have a bunch of freebore to boot.</p><p></p><p>Thank you very much for sharing, and am interested in hearing more about this rifle.</p><p></p><p>L-R....338 Norma, 338 Lapua, 300 RUM, 338-378 Wby, 338 Excalibur, .540 bolt face/staggered feed Wby mag box, .580 bolt face/center feed Wby mag box.</p><p><img src="http://autorotate.smugmug.com/Other/Hunting/338-Line-up-with-mag-boxes/831412750_hMmjC-XL.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p><img src="http://autorotate.smugmug.com/Other/Hunting/P1010230/820260883_KxGFZ-XL.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p><img src="http://autorotate.smugmug.com/Other/Hunting/P1010224/820260578_M4sUg-XL.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p></blockquote><p></p>
[QUOTE="Autorotate, post: 380506, member: 8073"] LTLR Thanks for sharing. I'd be interested in learning: 1. How much freebore/throat this rifle was chambered with. 2. The water case capacity of the fired cases. 3. Maybe you have a picture of the case as compared to a standard 338-378 Wby case you could post...or email it to me, and I'll post it. 4. Same interest as posted above on the accuracy at these velocity levels I was able to achieve 3100+ fps before pressure signs with the rifle listed below: Weatherby Mark V 338 Excalibur w/.285 worth of freebore/parallel throat 31.25" Brux 9.8 twist COAL was approx 4.185 (I'll get a more recent pic with the optics mounted and some more load development here a few weeks) Accuracy came in around 122 grains of H50BMG at 3075-3082 fps with the 300 SMK. The once fired cases hold right at 140 grains of water with a spent primer seated in reverse. This case/bullet COAL combination starts to see powder compression at the 123.5 to 124 grain levels....with a 140 grain case and a long COAL.......this 338-378 Wby must be absolutely maxed out regarding case improvement...and have a bunch of freebore to boot. Thank you very much for sharing, and am interested in hearing more about this rifle. L-R....338 Norma, 338 Lapua, 300 RUM, 338-378 Wby, 338 Excalibur, .540 bolt face/staggered feed Wby mag box, .580 bolt face/center feed Wby mag box. [IMG]http://autorotate.smugmug.com/Other/Hunting/338-Line-up-with-mag-boxes/831412750_hMmjC-XL.jpg[/IMG] [IMG]http://autorotate.smugmug.com/Other/Hunting/P1010230/820260883_KxGFZ-XL.jpg[/IMG] [IMG]http://autorotate.smugmug.com/Other/Hunting/P1010224/820260578_M4sUg-XL.jpg[/IMG] [/QUOTE]
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