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Rifles, Reloading, Optics, Equipment
Reloading
Reloder 26, Temperature Stability Sensitivity Data
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<blockquote data-quote="Hawk in WY" data-source="post: 1395995" data-attributes="member: 70947"><p>I bring data.</p><p></p><p>I'm developing a load for my 300 Win Mag with the 220 gr Nosler Custom Competition.</p><p></p><p>At 30 degrees 72.8 grains of Reloder 26 shoots 2866 fps.</p><p>At 70 degrees 72.8 grains of Reloder 26 shoots 2904 and is over pressure.</p><p></p><p>At 70 degrees it takes 71.2 grains Reloder 26 to reach 2850 fps</p><p></p><p>At 30 degrees 69.4 grains of IMR 4955 shoots 2749 fps</p><p>At 70 degrees 69.3 grains of IMR 4955 shoots 2750 fps</p><p></p><p>Little different analysis since I'm solving for Optimal Barrel Time with QuickLOAD.</p><p></p><p>I have verified the 30 degree data with a Labradar.</p><p>The 70 degree data are from QuickLOAD</p><p>Not going to be 70 here for several months.</p><p></p><p>My data confirms Reloder 26 gives 100 fps higher velocity at the same pressure but loses around 1.0 fps per degree between 30 and 70 degrees.</p><p></p><p>Also looks as if IMR 4955 is very temperature stable but shoots approximately 100 fps slower than Reloder 26.</p></blockquote><p></p>
[QUOTE="Hawk in WY, post: 1395995, member: 70947"] I bring data. I'm developing a load for my 300 Win Mag with the 220 gr Nosler Custom Competition. At 30 degrees 72.8 grains of Reloder 26 shoots 2866 fps. At 70 degrees 72.8 grains of Reloder 26 shoots 2904 and is over pressure. At 70 degrees it takes 71.2 grains Reloder 26 to reach 2850 fps At 30 degrees 69.4 grains of IMR 4955 shoots 2749 fps At 70 degrees 69.3 grains of IMR 4955 shoots 2750 fps Little different analysis since I'm solving for Optimal Barrel Time with QuickLOAD. I have verified the 30 degree data with a Labradar. The 70 degree data are from QuickLOAD Not going to be 70 here for several months. My data confirms Reloder 26 gives 100 fps higher velocity at the same pressure but loses around 1.0 fps per degree between 30 and 70 degrees. Also looks as if IMR 4955 is very temperature stable but shoots approximately 100 fps slower than Reloder 26. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Reloder 26, Temperature Stability Sensitivity Data
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