Thanks for the pics. I get the weight thing and the split ring for clamping but I am not sure about the rubber? Is it for a better grip of the tuner or is it supposed to dampen? Just wondering out loud because Gene has forgotten more about accuracy shooting than I will ever know. I tend to over think things at times. I read his thoughts on the use of the tuner and it makes sense. Certainly can't argue with his success.
Kris Whitman
Al,
I have read that the vibration from the striker assembly has time to travel back and forth from the muzzle several times before the bullet exits. Additionally, there has been some discussion of the effects of shroud, bolt body, and lug to action fit on accuracy, that may be vibration related. Years back, I did some informal testing of a rubber piece that is designed to be put on barrels, to improve accuracy. Since then I have heard from fellows that have tested them on various rifles. Some saw noticeable improvement, some did not. From my own experience I can say that the Sims Deresonator does a very good job of damping audible vibrations that are produced when a barrel is tapped with a metallic object, turning the typical ringing sound into something more akin to a thud. When I spoke with Gene Buckys about the rubber on his tuner, he told me that he had tested several different kinds before choosing what he uses. It would seem to me that if there was no effect, that there would have been no difference in the tests, and no reason to choose one over the other. Years back, I shot one of Jackie's tuners throughout a match weekend at Visalia. The rifle did much better than its previous record with that barrel. Part of the setup was a Deresonator that was immediately behind the tuner threads. this was something that I added, not a part of his tuner. It was an earlier version, that was lighter than his current one and without rubber. I had done some testing, and came to the conclusion that it it was an advantage to have it on the barrel. Admittedly, one may speculate as to why this was, and quite logically challenge my ability to make an absolute determination. I should also mention that Jackie has added a rubber element to his tuners, and he has done some excellent work with his. Obviously, tuners that are made entirely of metal have been shown to work, but the addition of some sort of damping material may offer some advantage. I think that Gene has demonstrated his shooting ability and with it the credentials to be able to test various tuner configurations, and make that determination.
Has anyone tried plying with the resonance of a boring bar in a lathe with a rubber band? I remember reading about this in an old machining tips book.
How much does the tuner weigh?......Ian
One thing for sure the rubber sleeve provides is weight. A tuner must have weight (mass) to function.
In the past Gene has made prototype aluminum/rubber tuners as light as 2.5oz that were quite effective.
v
True enough. But like I've been preaching - it needs much more than that to function in an optimum manner. I'll admit though that I had not even begun to address attenuation of the higher frequencies like this direction will do. But I'm happy to see that creative thinkers are just as unconvinced that "it's just a properly positioned mass" that causes a tuner to function as it does. It's not about "stopping the muzzle" so much as it is putting it into active service toward helping the trajectory end up where you want it. Since a "stopped muzzle" will not help correct for the unexpected at all.One thing for sure the rubber sleeve provides is weight. A tuner must have weight (mass) to function.
Smitty sir,Thanks for the posts.May I ask how wide your tune is or when do you have to change up the load once the tuner is set in one spot ?Or will it hold a tune for the complete day ussually without adjusting anything?Thanks Tim in Tx
Gene has told me that once you find your optimum tuner setting lock the tuner down and leave it alone. When swings in temperature and humidity dictate change make them via powder charges.
I must admit that I do not change anything in my tuneup until my groups force me to make an adjustment.
Gene has told me that once you find your optimum tuner setting lock the tuner down and leave it alone. When swings in temperature and humidity dictate change make them via powder charges.
Just thinking here. If you lock the tuner down and make tem/hum changes by powder charges..........isn't this what we have been doing for years before tuners showed up? Personally I use my tuners to take the verticle out when the temp changes, and yes I might make a powder change too.
Donald