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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
RL33 Temperature Regression Thread
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<blockquote data-quote="Max Heat" data-source="post: 920422" data-attributes="member: 43153"><p>OK, thanks.</p><p></p><p>But getting back on topic, I find that 33 seems to be ALOT slower & way more "stable" than 25, the next fastest in the current RL series line-up. The temp instability doesn't make a whole lot of sense for such a powder. Like said, more data is need before any solid conclusions can be drawn. But 33 is exhibiting un-expected behavior for me also, but in a different way. It's starting to look like a very strange animal!</p><p></p><p>I've only fired one 5-shot group with it so far, out of my new [long] barrel. So the data is scarce in MY scenario also. The velocity readings were anything but tight. And that probably explains why the [best 4 shots, out of 5] group did 1/2moa on the horizontal plane, but only managed 1moa on the vertical. </p><p></p><p>Here are the actual #s:</p><p></p><p>1. error</p><p>2. 3486</p><p>3. 3379</p><p>4. 3570</p><p>5. 3501</p><p></p><p>There is almost 200fps between shots 3 and 4. That seems pretty crazy. It's hard to believe I even achieved 1moa vertical, with THAT kind of variation. I weighed each charge individually, to boot! Maybe I screwed up somehow on that, as it is the only "reasonable" explanation. I have the next 5 rounds loaded to within 4/100 of 105gr, so we'll see how that goes. But we just got dumped with another foot of snow here since yesterday, on top of what was already laying, so not sure if I'll make it to the range today or not.</p></blockquote><p></p>
[QUOTE="Max Heat, post: 920422, member: 43153"] OK, thanks. But getting back on topic, I find that 33 seems to be ALOT slower & way more "stable" than 25, the next fastest in the current RL series line-up. The temp instability doesn't make a whole lot of sense for such a powder. Like said, more data is need before any solid conclusions can be drawn. But 33 is exhibiting un-expected behavior for me also, but in a different way. It's starting to look like a very strange animal! I've only fired one 5-shot group with it so far, out of my new [long] barrel. So the data is scarce in MY scenario also. The velocity readings were anything but tight. And that probably explains why the [best 4 shots, out of 5] group did 1/2moa on the horizontal plane, but only managed 1moa on the vertical. Here are the actual #s: 1. error 2. 3486 3. 3379 4. 3570 5. 3501 There is almost 200fps between shots 3 and 4. That seems pretty crazy. It's hard to believe I even achieved 1moa vertical, with THAT kind of variation. I weighed each charge individually, to boot! Maybe I screwed up somehow on that, as it is the only "reasonable" explanation. I have the next 5 rounds loaded to within 4/100 of 105gr, so we'll see how that goes. But we just got dumped with another foot of snow here since yesterday, on top of what was already laying, so not sure if I'll make it to the range today or not. [/QUOTE]
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RL33 Temperature Regression Thread
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