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Rifles, Reloading, Optics, Equipment
Reloading
RL33 vs N570 (temp sensitivity)
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<blockquote data-quote="Doublezranch" data-source="post: 1332210" data-attributes="member: 32664"><p>Hey Rich,</p><p></p><p>N570 and RL33 are on different ends of the world when it comes to temp sensitivity. In testing 33 in quite a few applications, the 33 goes volatile super quick once any heat is introduced. Whether it's outside temp or chamber temp it gets squirly quick. I found that a very accurate load (within pressure limits) at 75-80 degrees outside temp was about 2 grains less than at 45-50 degrees outside temp in my 300 RUM. Winter shooting I could get 102.5 grains in the RUM and it was amazing. But shooting in the summer with 102.5 was catastrophic. I didn't see a positive change until I dropped the charge to 100.5 grains. 33 is good, but really tricky. I use N570 in the 338 Texan and in the 375 Zayne with unmatched accuracy, performance, and consistency. In fact the 375 Zayne shot a .184 group at 100 yards last weekend at 85 degrees with no pressure signs whatsoever. 120 grains of N570 and 395 Hammer. In my opinion both powders have their place, but both are on different spectrums when it comes to temp sensitivity.</p><p></p><p>All the best!! Jayson</p></blockquote><p></p>
[QUOTE="Doublezranch, post: 1332210, member: 32664"] Hey Rich, N570 and RL33 are on different ends of the world when it comes to temp sensitivity. In testing 33 in quite a few applications, the 33 goes volatile super quick once any heat is introduced. Whether it's outside temp or chamber temp it gets squirly quick. I found that a very accurate load (within pressure limits) at 75-80 degrees outside temp was about 2 grains less than at 45-50 degrees outside temp in my 300 RUM. Winter shooting I could get 102.5 grains in the RUM and it was amazing. But shooting in the summer with 102.5 was catastrophic. I didn't see a positive change until I dropped the charge to 100.5 grains. 33 is good, but really tricky. I use N570 in the 338 Texan and in the 375 Zayne with unmatched accuracy, performance, and consistency. In fact the 375 Zayne shot a .184 group at 100 yards last weekend at 85 degrees with no pressure signs whatsoever. 120 grains of N570 and 395 Hammer. In my opinion both powders have their place, but both are on different spectrums when it comes to temp sensitivity. All the best!! Jayson [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
RL33 vs N570 (temp sensitivity)
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