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Rifles, Reloading, Optics, Equipment
Reloading
Which Chronograph?!??
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<blockquote data-quote="Greyfox" data-source="post: 803413" data-attributes="member: 10291"><p>Gary, I'm not so sure now. I did some searching on the topic. Turns out, it'a controversial topic. I had read a few times in the past that when a chronograph is placed 10-20 feet from the muzzle that you needed to add back some velocity to get the true muzzle velocity since the bullet slows down from air resistance immediately. Turns out the Army claimed as a result of tests years ago that the bullet did speed up when it left the.muzzle for few inches due to gases still pushing on the bullet. Since that report there has been disputes. I would think that a muzzle break would reduce this gas effect yet there are claims that there is no effect on velocity. Anyway, it seems it's an open question unless someone chimes in with additional information. I'm not so sure that it will make a big difference anyway. </p><p>Art</p></blockquote><p></p>
[QUOTE="Greyfox, post: 803413, member: 10291"] Gary, I'm not so sure now. I did some searching on the topic. Turns out, it'a controversial topic. I had read a few times in the past that when a chronograph is placed 10-20 feet from the muzzle that you needed to add back some velocity to get the true muzzle velocity since the bullet slows down from air resistance immediately. Turns out the Army claimed as a result of tests years ago that the bullet did speed up when it left the.muzzle for few inches due to gases still pushing on the bullet. Since that report there has been disputes. I would think that a muzzle break would reduce this gas effect yet there are claims that there is no effect on velocity. Anyway, it seems it's an open question unless someone chimes in with additional information. I'm not so sure that it will make a big difference anyway. Art [/QUOTE]
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Which Chronograph?!??
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