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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Reloder 33
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<blockquote data-quote="AZShooter" data-source="post: 857713" data-attributes="member: 5219"><p>I poured over my notes and don't have velocities for all my rifles using RL-33 within temperature range I mentioned, just some of them. Velocity change was minor no more than 25/30 fps. But the temperature range is only 31 degrees. </p><p></p><p> RL-33 and RL-17 made in Switzerland by Nitrochemie and are formulated differently than the other Reloader powders. They cannot be judged with the blanket statement that all Reloader powders are temperature sensitive. These two powders have a very long pressure curve due to unique burn-rate controlling chemical that penetrates all the way through the kernels. We will get this figured out soon. </p><p></p><p> I use a CO2 tank for cooling the barrel. Guess I could set up an experiment by cooling the ammo in a small cooler and get the barrel good and cold with the CO2. </p><p></p><p>Never chronographed velocity differences with retumbo. Only used it briefly in a 7 rem mag and a 6mm-284. 7 mag was used for one hunt then rechambered to 7mm/375.</p></blockquote><p></p>
[QUOTE="AZShooter, post: 857713, member: 5219"] I poured over my notes and don't have velocities for all my rifles using RL-33 within temperature range I mentioned, just some of them. Velocity change was minor no more than 25/30 fps. But the temperature range is only 31 degrees. RL-33 and RL-17 made in Switzerland by Nitrochemie and are formulated differently than the other Reloader powders. They cannot be judged with the blanket statement that all Reloader powders are temperature sensitive. These two powders have a very long pressure curve due to unique burn-rate controlling chemical that penetrates all the way through the kernels. We will get this figured out soon. I use a CO2 tank for cooling the barrel. Guess I could set up an experiment by cooling the ammo in a small cooler and get the barrel good and cold with the CO2. Never chronographed velocity differences with retumbo. Only used it briefly in a 7 rem mag and a 6mm-284. 7 mag was used for one hunt then rechambered to 7mm/375. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Reloder 33
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