Quote:
Originally Posted by tobnpr
It's called barrel harmonics.
Take an empty water hose- and turn the spigot wide open. Similar forces at work.
Now- as you see that barrel whip, realize that the bullet is going to exit the muzzle just as the water exits the end of the hose. The muzzle is going to be at a specific point in space when that happens.
The key to a very accurate rifle is achieving precise repeatability of the shockwave that resonates back and forth along the length of the barrel, so that the bullet exits when the shockwave is closest to the barrel shank and the muzzle is "whipping" the least. Many variables including powder/burn rate, bullet weight, as well as barrel length and rigidity. It's why every rifle "likes" different ammo, and also why certain match-grade ammo like FGMM and Black Hills are known to be "generically" accurate put of most rifles. The harmonics generated by them is conducive to this type of accuracy "node".
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Well explained.
How barrels are manufactured are also a factor. How the companies remove stress and stabilize the barrels affects harmonics.
People have also tried many different tuning products to help with this.
The B.O.S.S. muzzle brake was one that jumps out quickly and worked very well, once you got it dialed in, and never changed anything about your load.
Several around barrel dampeners have come and gone over the years. The Limbsaver Barrel Deresonator is still widely available and has been shown to work if you find the sweet spot on your barrel and can get past the looks.
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