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Long Range Hunting & Shooting
Long Action vs Short Action.
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<blockquote data-quote="nralifer" data-source="post: 2682904" data-attributes="member: 94556"><p>When one truly considers all the variables that play into a rifle shot, one starts to wonder how rifles can be made to shoot as accurately as they do. One well established concept is that of barrel harmonics playing into group size. The object is to tune the load such that the barrel vibrates consistently from shot to shot thus releasing the bullet while it is in the same position in its vibration cycle. In load development we all have experienced the phenomenon that there are certain speeds where groups are the tightest. Speeds above that tight group speed start to open up. In some instances continued increases in speed may lead to a second accuracy node at a higher speed as long as there is not an overpressure situation. When that happens every body is happy. That higher speed accuracy node may vary from powder to powder, and thus it is important to be open to trying different powders. The reason I mentioned LVR is that it is generally not listed as a powder useful in the 308 Win, but it is my experience that it can work well. That doesn't mean it will work as well for everyone though. CFE 223 is listed for the 308, but it did not work for me. Since LVR had a slightly lower burn rate, I decided to try it and it worked fine.</p></blockquote><p></p>
[QUOTE="nralifer, post: 2682904, member: 94556"] When one truly considers all the variables that play into a rifle shot, one starts to wonder how rifles can be made to shoot as accurately as they do. One well established concept is that of barrel harmonics playing into group size. The object is to tune the load such that the barrel vibrates consistently from shot to shot thus releasing the bullet while it is in the same position in its vibration cycle. In load development we all have experienced the phenomenon that there are certain speeds where groups are the tightest. Speeds above that tight group speed start to open up. In some instances continued increases in speed may lead to a second accuracy node at a higher speed as long as there is not an overpressure situation. When that happens every body is happy. That higher speed accuracy node may vary from powder to powder, and thus it is important to be open to trying different powders. The reason I mentioned LVR is that it is generally not listed as a powder useful in the 308 Win, but it is my experience that it can work well. That doesn’t mean it will work as well for everyone though. CFE 223 is listed for the 308, but it did not work for me. Since LVR had a slightly lower burn rate, I decided to try it and it worked fine. [/QUOTE]
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