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Rifles, Reloading, Optics, Equipment
Reloading
5 or 3 shot group when determining ES/SD???
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<blockquote data-quote="Michael Eichele" data-source="post: 625952" data-attributes="member: 1007"><p>I have only read a few posts so please excuse me if I offer redundant ideas.</p><p></p><p>I run dozens of my loads over the chrony. Not all at once of course. Unless I am in the field shooting prone and am just at the range dialing in, testing, experiemnting etc....all of my loads get fired over my chrony. This gives me a very clear and accurate picture of my real ES/SD is as well as temperature swings. Some groups are 4-5 FPS apart and others are 20+. The bottom line is that I can see what the general average is. My 'single digit' ES loads typically are single digits most of the time with some groups showing 10-20 FPS difference. I don't think there is ever a TRUE single digit ES load all the time. Even in the BR crowd. I don't know how important single digit ES's are anyway. I have had multiple loads that had 20-30 FPS ES and they grouped very well even at long range. There is more to vertical separation than just an extreme velocity spread. That said, there comes a point in every bullet's life when high extreme spreads rear their ugly heads. 15-25 will still offer a decent group at 1K provided it is a good load to begin with. For my 1K loads, I strive for 0-15 FPS ES with an occasional 20 FPS spread, even though 0 is not possible at this point in time, its just a reference. </p><p></p><p>Find a load that offers good accuracy and consistency and be happy. Good velocities are #2 and low ES are #3. A load that offers the best harmonics possible is worth more than low ES (IMHO). Find good harmonics and you will be a successfull longrange marksman.</p></blockquote><p></p>
[QUOTE="Michael Eichele, post: 625952, member: 1007"] I have only read a few posts so please excuse me if I offer redundant ideas. I run dozens of my loads over the chrony. Not all at once of course. Unless I am in the field shooting prone and am just at the range dialing in, testing, experiemnting etc....all of my loads get fired over my chrony. This gives me a very clear and accurate picture of my real ES/SD is as well as temperature swings. Some groups are 4-5 FPS apart and others are 20+. The bottom line is that I can see what the general average is. My 'single digit' ES loads typically are single digits most of the time with some groups showing 10-20 FPS difference. I don't think there is ever a TRUE single digit ES load all the time. Even in the BR crowd. I don't know how important single digit ES's are anyway. I have had multiple loads that had 20-30 FPS ES and they grouped very well even at long range. There is more to vertical separation than just an extreme velocity spread. That said, there comes a point in every bullet's life when high extreme spreads rear their ugly heads. 15-25 will still offer a decent group at 1K provided it is a good load to begin with. For my 1K loads, I strive for 0-15 FPS ES with an occasional 20 FPS spread, even though 0 is not possible at this point in time, its just a reference. Find a load that offers good accuracy and consistency and be happy. Good velocities are #2 and low ES are #3. A load that offers the best harmonics possible is worth more than low ES (IMHO). Find good harmonics and you will be a successfull longrange marksman. [/QUOTE]
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5 or 3 shot group when determining ES/SD???
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