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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Hodgdon's "Extreme Powder" - reduce velocity variations due to temperature changes
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<blockquote data-quote="buckbrush" data-source="post: 431518" data-attributes="member: 13680"><p><strong>Re: Hodgdon's "Extreme Powder" - reduce velocity variations due to temperature chan</strong></p><p></p><p>Here is some data for both RL19 and IMR4350 out of a 338 WM shooting 225 Accubonds and CCI250's. One was a cold morning and the other was mid-day in the sun.</p><p> </p><p>73 gr of IMR4350</p><p> </p><p>37°F, Avg velocity was 2921 fps</p><p>68°F, Avg velocity was 2992 fps</p><p> </p><p>76 grains of RL19</p><p> </p><p>37°F, Avg velocity was 2902 fps</p><p>68°F, Avg velocity was 2961 fps</p><p> </p><p>Because of these swings, I think I am going to try H4381sc in hopes of better temp stability. I didn't think they were this temp sensitive.</p></blockquote><p></p>
[QUOTE="buckbrush, post: 431518, member: 13680"] [b]Re: Hodgdon's "Extreme Powder" - reduce velocity variations due to temperature chan[/b] Here is some data for both RL19 and IMR4350 out of a 338 WM shooting 225 Accubonds and CCI250's. One was a cold morning and the other was mid-day in the sun. 73 gr of IMR4350 37°F, Avg velocity was 2921 fps 68°F, Avg velocity was 2992 fps 76 grains of RL19 37°F, Avg velocity was 2902 fps 68°F, Avg velocity was 2961 fps Because of these swings, I think I am going to try H4381sc in hopes of better temp stability. I didn't think they were this temp sensitive. [/QUOTE]
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Hodgdon's "Extreme Powder" - reduce velocity variations due to temperature changes
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