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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
RL33 Temperature Regression Thread
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<blockquote data-quote="Ridgerunner665" data-source="post: 998464" data-attributes="member: 12660"><p>I only skimmed through this thread, didn't read everything closely...but I have a small contribution that may be of some use.</p><p></p><p>It pertains to a 30-06 using H4350, which is an extremely stable powder in that round...the only significant velocity increase came when the rifle itself was cold and hot, below 30 degrees and above 80...it gained 10 fps from 30 to 20 degrees....and lost 10 fps from 80 to 90.</p><p></p><p>I decided it was the steel causing the velocity changes and not the powder, it had to be because the ammo was kept at a stable temp throughout....may or may not be correct, but it made sense to me based on what I saw.</p><p></p><p>The load being tested was:</p><p></p><p>168 Nosler Ballistic Tip</p><p>57.5 grains H4350</p><p>Lapua brass</p><p>CCI BR2 primer</p><p>OAL ~ 3.34"</p><p>2,850 fps</p><p></p><p>An extremely accurate load in that rifle...</p></blockquote><p></p>
[QUOTE="Ridgerunner665, post: 998464, member: 12660"] I only skimmed through this thread, didn't read everything closely...but I have a small contribution that may be of some use. It pertains to a 30-06 using H4350, which is an extremely stable powder in that round...the only significant velocity increase came when the rifle itself was cold and hot, below 30 degrees and above 80...it gained 10 fps from 30 to 20 degrees....and lost 10 fps from 80 to 90. I decided it was the steel causing the velocity changes and not the powder, it had to be because the ammo was kept at a stable temp throughout....may or may not be correct, but it made sense to me based on what I saw. The load being tested was: 168 Nosler Ballistic Tip 57.5 grains H4350 Lapua brass CCI BR2 primer OAL ~ 3.34" 2,850 fps An extremely accurate load in that rifle... [/QUOTE]
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RL33 Temperature Regression Thread
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