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Hunting
Extreme Long Range Hunting & Shooting (ELR)
338 Excalibur load data
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<blockquote data-quote="Autorotate" data-source="post: 1560688" data-attributes="member: 8073"><p>From my notes in 2009 <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p><p></p><p>Here's the load I settled in on. Shoots 1.75 to 2 inches at 300 yds.</p><p></p><p>122 gr H-50 BMG</p><p>F215GM</p><p>300 SMK</p><p>3.425 Ogive COAL (4.12+ OAL)</p><p>A-Square brass</p><p>Neck turned to .013 thickness</p><p>.002 worth of neck tension</p><p>3070 fps avg over 8 shots</p><p>ES 16 fps over 8 shots</p><p>Brux 31.25" barrel from bolt face to muzzle crown</p><p></p><p>5 firings haven't lost a primer pocket.</p><p></p><p>Have went up to 126 grains of H50BMG well over 3100 fps, still no primer pocket loss, but sticky bolt lift. Retumbo worked too, but assuming someone want's max effort if they're building one of these, so H50BMG is where'd I'd start.</p></blockquote><p></p>
[QUOTE="Autorotate, post: 1560688, member: 8073"] From my notes in 2009 :) Here's the load I settled in on. Shoots 1.75 to 2 inches at 300 yds. 122 gr H-50 BMG F215GM 300 SMK 3.425 Ogive COAL (4.12+ OAL) A-Square brass Neck turned to .013 thickness .002 worth of neck tension 3070 fps avg over 8 shots ES 16 fps over 8 shots Brux 31.25" barrel from bolt face to muzzle crown 5 firings haven't lost a primer pocket. Have went up to 126 grains of H50BMG well over 3100 fps, still no primer pocket loss, but sticky bolt lift. Retumbo worked too, but assuming someone want's max effort if they're building one of these, so H50BMG is where'd I'd start. [/QUOTE]
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Extreme Long Range Hunting & Shooting (ELR)
338 Excalibur load data
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