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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
My 338 Sherman / Ruger M77 Build
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<blockquote data-quote="RedSnake" data-source="post: 1691943" data-attributes="member: 102245"><p>Thx benchracer. For the 338-06 brass the neck is shorter than ideal, although accuracy doesn't seem to have been affected at least with fire forming loads which were 1/3 to 1/2 moa so I'm hopeful this will hold true when I shoot for groups to determine best load with a modified OCW method.</p><p></p><p>Norma 338-06 brass</p><p>Initial length 2.485</p><p>Fire Formed 2.470</p><p>H20 capacity 77.0 gr</p><p></p><p>I also necked up Hornady Outfitter 270 brass with a Sinclair expander die with .30 and .338 mandrel to see how they did</p><p>Initial length 2.495</p><p>Fire Formed 2.485 to 2.490</p><p>H20 capacity 77.5 gr</p><p></p><p><img src="https://isolunar.files.wordpress.com/2019/08/7a7485cb-94b9-4a24-9bda-d0779719a1dc.jpeg" alt="" class="fr-fic fr-dii fr-draggable " style="" /> </p><p></p><p><img src="https://isolunar.files.wordpress.com/2019/08/b9e77e39-e0e5-42a6-846b-1848fce9fc5c.jpeg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p>Mv for the Hornady brass was 10-25 FPS slower per charge — I'm guessing due to less pressure from greater case capacity.</p><p></p><p>s for the RM bullets, I am excited to see how they do as well. Stated G1 per their site is 0.842 but at a mv of 3500. I'm not that optimistic but Nathan at <a href="http://www.ballisticsstudies.com" target="_blank">www.ballisticstudies.com</a> has done field testing and says their bc's hold true — good read here... <a href="https://www.ballisticstudies.com/Knowledgebase/Rocky+Mountain+Bullet+Test+Fire.html" target="_blank">https://www.ballisticstudies.com/Knowledgebase/Rocky+Mountain+Bullet+Test+Fire.html</a></p></blockquote><p></p>
[QUOTE="RedSnake, post: 1691943, member: 102245"] Thx benchracer. For the 338-06 brass the neck is shorter than ideal, although accuracy doesn’t seem to have been affected at least with fire forming loads which were 1/3 to 1/2 moa so I’m hopeful this will hold true when I shoot for groups to determine best load with a modified OCW method. Norma 338-06 brass Initial length 2.485 Fire Formed 2.470 H20 capacity 77.0 gr I also necked up Hornady Outfitter 270 brass with a Sinclair expander die with .30 and .338 mandrel to see how they did Initial length 2.495 Fire Formed 2.485 to 2.490 H20 capacity 77.5 gr [IMG]https://isolunar.files.wordpress.com/2019/08/7a7485cb-94b9-4a24-9bda-d0779719a1dc.jpeg[/IMG] [IMG]https://isolunar.files.wordpress.com/2019/08/b9e77e39-e0e5-42a6-846b-1848fce9fc5c.jpeg[/IMG] Mv for the Hornady brass was 10-25 FPS slower per charge — I’m guessing due to less pressure from greater case capacity. s for the RM bullets, I am excited to see how they do as well. Stated G1 per their site is 0.842 but at a mv of 3500. I’m not that optimistic but Nathan at [URL='http://www.ballisticsstudies.com']www.ballisticstudies.com[/URL] has done field testing and says their bc’s hold true — good read here... [URL]https://www.ballisticstudies.com/Knowledgebase/Rocky+Mountain+Bullet+Test+Fire.html[/URL] [/QUOTE]
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My 338 Sherman / Ruger M77 Build
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