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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Mitigating Barrel Whip and Harmonics
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<blockquote data-quote="nicholasjohn" data-source="post: 1766601" data-attributes="member: 109113"><p>I used one of those devices that was inletted into the barrel channel of the forend. It didn't work worth a darn, but the idea sure seemed like it should have. I have had much better results using shims made of a number of different materials for the same purpose - and it's a whole lot cheaper. Credit card shim worked OK; beer can shims worked better. </p><p></p><p>I think that the inletted device may have worked better if I had taken more time to figure out its tricks, but I didn't feel like investing a whole week at the range to sort it out when I could just default to a simple trick and get the job done in no time flat. With anything that puts upward pressure on the barrel, the stiffness of the stock's forend is the limiting factor. Some of the old injection molded synthetic stocks are so flexible that nothing helps, and whatever you get when you free-float the barrel ( by putting your beer can shim under the barrel shank ) is as good as you're going to make it shoot. With other stock materials, you may or may not get good results putting the shim up near the front of the barrel channel. You just have to try it and see what works. I would recommend starting out by putting the shim in the back, and if that doesn't bear any fruit for you, move it to the front. If one shim doesn't help, try two. </p><p></p><p>One thing that will take a variable out of the equation is a torque wrench. If you're going to take the gun out of the stock to fiddle with the shims, you need to know that the action screws are both torqued the same each time, or that will introduce another potential problem in to the equation. Given the choice, I would take the $$$$ you had thought about spending on the in-stock tuning device and spend it on the torque wrench instead. If you torque the screws to the specs that come with the wrench, you may find that you don't even need to try any shims <strong>……. </strong></p></blockquote><p></p>
[QUOTE="nicholasjohn, post: 1766601, member: 109113"] I used one of those devices that was inletted into the barrel channel of the forend. It didn't work worth a darn, but the idea sure seemed like it should have. I have had much better results using shims made of a number of different materials for the same purpose - and it's a whole lot cheaper. Credit card shim worked OK; beer can shims worked better. I think that the inletted device may have worked better if I had taken more time to figure out its tricks, but I didn't feel like investing a whole week at the range to sort it out when I could just default to a simple trick and get the job done in no time flat. With anything that puts upward pressure on the barrel, the stiffness of the stock's forend is the limiting factor. Some of the old injection molded synthetic stocks are so flexible that nothing helps, and whatever you get when you free-float the barrel ( by putting your beer can shim under the barrel shank ) is as good as you're going to make it shoot. With other stock materials, you may or may not get good results putting the shim up near the front of the barrel channel. You just have to try it and see what works. I would recommend starting out by putting the shim in the back, and if that doesn't bear any fruit for you, move it to the front. If one shim doesn't help, try two. One thing that will take a variable out of the equation is a torque wrench. If you're going to take the gun out of the stock to fiddle with the shims, you need to know that the action screws are both torqued the same each time, or that will introduce another potential problem in to the equation. Given the choice, I would take the $$$$ you had thought about spending on the in-stock tuning device and spend it on the torque wrench instead. If you torque the screws to the specs that come with the wrench, you may find that you don't even need to try any shims [B]……. [/B] [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Mitigating Barrel Whip and Harmonics
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