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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Es/sd
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<blockquote data-quote="MontanaRifleman" data-source="post: 373679" data-attributes="member: 11717"><p>Paul, as mentioned in another thread by another member from Montana, we hunt a wide variety of elevations and we can get some angle shots as well. I should probably make myself clear, that I feel that my chrony's are fairly close in determining an average velocity range, but I wouldn't call them precise, and I wouldn't throw out a load because one of them, or both of them, gave me a large ES. The reason being, that they sometimes give out of the ball park readings, and I just cant tell for sure which are inaccurate and which are close. But after shooting several or more strings on different days, i think I can get a reasonable idea of what the actual MV is. My best guess is that it probably lies somewhere between the two chrony's I have and probably closer to the older ProChrono. Just a guess really. And I think that the vast majority of chrony owner shooters out there who are reading this might be surprised if they put their chrony in line with another one and did it on several occasions.</p><p> </p><p>So, I do use the MV I get for starters. If my drops tell me that my BC and/or MV are too high or low, then I will adjust one or both and use those inputs for the appropriate drop and windage output for the conditions. If the BC source is from Brian Litz, I'll put more weight on that and adjust the MV more than the BC. If the BC source is from the manufacturer (except Berger) and it suggesting my inputs are too high, then I'll probably adjust the BC down more than the MV. I would be very hesitant to raise a manufacturer's BC.</p><p> </p><p>In the end, I'm looking for bullets to hit where I expect them to down range. It would be nice to have a program that would graph a shooter's drops at several ranges and then match the drop curve to othere MV and BC curves.</p></blockquote><p></p>
[QUOTE="MontanaRifleman, post: 373679, member: 11717"] Paul, as mentioned in another thread by another member from Montana, we hunt a wide variety of elevations and we can get some angle shots as well. I should probably make myself clear, that I feel that my chrony's are fairly close in determining an average velocity range, but I wouldn't call them precise, and I wouldn't throw out a load because one of them, or both of them, gave me a large ES. The reason being, that they sometimes give out of the ball park readings, and I just cant tell for sure which are inaccurate and which are close. But after shooting several or more strings on different days, i think I can get a reasonable idea of what the actual MV is. My best guess is that it probably lies somewhere between the two chrony's I have and probably closer to the older ProChrono. Just a guess really. And I think that the vast majority of chrony owner shooters out there who are reading this might be surprised if they put their chrony in line with another one and did it on several occasions. So, I do use the MV I get for starters. If my drops tell me that my BC and/or MV are too high or low, then I will adjust one or both and use those inputs for the appropriate drop and windage output for the conditions. If the BC source is from Brian Litz, I'll put more weight on that and adjust the MV more than the BC. If the BC source is from the manufacturer (except Berger) and it suggesting my inputs are too high, then I'll probably adjust the BC down more than the MV. I would be very hesitant to raise a manufacturer's BC. In the end, I'm looking for bullets to hit where I expect them to down range. It would be nice to have a program that would graph a shooter's drops at several ranges and then match the drop curve to othere MV and BC curves. [/QUOTE]
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