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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
300 RUM Re-Loadings
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<blockquote data-quote="Brent" data-source="post: 30314" data-attributes="member: 99"><p>Here's some data I collected on the Oehler M43 with the 26" bbl 300 Ultra and the 200gr Accubond seated to the lands 3.835" OAL:</p><p></p><p>86gr 2961 fps 56,500 psi</p><p>88gr 3011 fps 59,500 psi</p><p>90gr 3082 fps 62,400 psi</p><p></p><p>At 3.660" OAL: </p><p></p><p>90gr 3012 fps</p><p>90gr 3030 fps</p><p>90gr 3019 fps </p><p></p><p>I didn't check psi here, so draw the conclusion. I'd say it went down to 60k.</p><p></p><p>I'm not concerned I'm over max load, as it apears I am, BUT there are absolutely no pressure signs in this 90gr load I'm using in MY GUN. <img src="http://images/icons/wink.gif" alt="" class="fr-fic fr-dii fr-draggable " style="" /> Pressure data supports it. YOURS MAY BE DIFFERENT, start low and work up to be safe. </p><p></p><p>This was the only load I didn't run into high pressure signs when testing a few powders, RL22, 4831, and RL25 were right at 70k psi when I fired my last loads of each, and pressure was starting to show on 4831 more than the others, RL22, then RL25 were about what I had figured on seeing. I could have went a bit more with Retumbo, but I didn't have any loaded up hotter so...</p><p></p><p>Enjoy, hope they shoot good in yours too. <img src="http://images/icons/smile.gif" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p></blockquote><p></p>
[QUOTE="Brent, post: 30314, member: 99"] Here's some data I collected on the Oehler M43 with the 26" bbl 300 Ultra and the 200gr Accubond seated to the lands 3.835" OAL: 86gr 2961 fps 56,500 psi 88gr 3011 fps 59,500 psi 90gr 3082 fps 62,400 psi At 3.660" OAL: 90gr 3012 fps 90gr 3030 fps 90gr 3019 fps I didn't check psi here, so draw the conclusion. I'd say it went down to 60k. I'm not concerned I'm over max load, as it apears I am, BUT there are absolutely no pressure signs in this 90gr load I'm using in MY GUN. [img]images/icons/wink.gif[/img] Pressure data supports it. YOURS MAY BE DIFFERENT, start low and work up to be safe. This was the only load I didn't run into high pressure signs when testing a few powders, RL22, 4831, and RL25 were right at 70k psi when I fired my last loads of each, and pressure was starting to show on 4831 more than the others, RL22, then RL25 were about what I had figured on seeing. I could have went a bit more with Retumbo, but I didn't have any loaded up hotter so... Enjoy, hope they shoot good in yours too. [img]images/icons/smile.gif[/img] [/QUOTE]
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300 RUM Re-Loadings
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