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Rifles, Reloading, Optics, Equipment
Reloading
How does chopping a barrel alter velocity nodes?
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<blockquote data-quote="imyourhuckleberry" data-source="post: 2093888" data-attributes="member: 18206"><p>The chamber pressure remains the same. What changes is how long that pressure lasts in the chamber since the barrel is shorten so is the length of times the pressure in the chamber lasts, thus the loss in velocity. But depending on the barrel contour whether it is a heavy barrel or a sporting barrel used in hunting the whipping of the barrel is less accentuated now that the barrel is shortened. So depending when the bullet exited the barrel with the original length of the barrel the bullet now exits at a different location with a shorter barrel as it may not flex as much. Hypothetically speaking lets say bullets exit at the peak or top of the flex on both lengths of the barrel, the arc created by the harmonics will be smaller on the shorter barrel. Add to it the loss of velocity caused by the shortening of the barrel the impact will be lower even though all groupings were at the same location. So to answer your question yes you do have to get a new node for your shorter barrel as ballistics have changed.</p></blockquote><p></p>
[QUOTE="imyourhuckleberry, post: 2093888, member: 18206"] The chamber pressure remains the same. What changes is how long that pressure lasts in the chamber since the barrel is shorten so is the length of times the pressure in the chamber lasts, thus the loss in velocity. But depending on the barrel contour whether it is a heavy barrel or a sporting barrel used in hunting the whipping of the barrel is less accentuated now that the barrel is shortened. So depending when the bullet exited the barrel with the original length of the barrel the bullet now exits at a different location with a shorter barrel as it may not flex as much. Hypothetically speaking lets say bullets exit at the peak or top of the flex on both lengths of the barrel, the arc created by the harmonics will be smaller on the shorter barrel. Add to it the loss of velocity caused by the shortening of the barrel the impact will be lower even though all groupings were at the same location. So to answer your question yes you do have to get a new node for your shorter barrel as ballistics have changed. [/QUOTE]
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How does chopping a barrel alter velocity nodes?
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