![]() ![]() Temps down, less mass, or move the mass away from the muzzle. ![]() Temps up, more mass or closer to the muzzle. With a non-adjustable tuner, add another (or more) washers. So, as temps increase, we correct by moving the mass closer to the muzzle, slowing down its oscillations and bringing it back into sync with the bullet's barrel transit time. This corresponds to moving the weight away from the muzzle. This why washers work better, they have less mass.Īs temperatures increase, barrels oscillate faster. The first one is that the smaller the weight, the less sensitive it is to environmental variance, and conversely, that it takes more displacement to achieve the desired result. I learned a lot of practical knowledge about tuners. It worked too well (way too much mass) and I abandoned it when I concluded that no adjustment I made with it would be any good as soon as the next day. I spent one entire Summer trying to concoct my own homemade harmonic barrel tuner. Better is good, perfection can be frustrating. This is one reason why I'm willing to give up some small margins of extreme accuracy in the interests of maintaining one's sanity.Ī key point to understand is that precision tuning can be too precise and be subject to going sour with weather deviations, which is why the really good ones are adjustable. If you wonder what I mean, visit a BR match sometime. Getting a rifle to shoot at its absolute best can become an exercise at hitting a moving target some can, and can keep it despite changes most other's can't and (maybe wisely) are willing to settle for pretty close. Do a Search for "Temperature and Natural Harmonic Frequency". In a pinch, you can wrap rubber bands around the muzzle, then weigh them on your powder scale to get an approximate equivalent washer weight.Ī key point to understand is that precision tuning can be too precise and be subject to going sour with weather deviations, which is why the really good ones are adjustable. ![]() David Tubb guy is one Canny Dude.īTW, they will also work behind a thread protector. You can buy the washers at gun distributor prices (approximately $2.50 each, plus tax and shipping), or shuffle on down to the local hardware store and buy them in bags for a lot less, 1/2" and 5/8" ID. ![]()
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