Barrel stabilizing Solutions

[Guest]

Just curious what guys out there are using barrel stabilizers, if any. In powder burning platforms I've used them a few times, including for the Mino-14. I know the rational for free floating and all that, which exists in the PB world too, but often depending on the gun clamping down, glass on the stock and so on gives better results. Has anyone used any time of barrel stabilizer? How has it impacted your harmonics? 



Post the links or pics if you have any. 

 

[Ezana4CE]

@HPAman I purchased a 3D printed plastic set from Pitbull Airguns for my Bulldog. I think you saw the thread where I tried to figure out how install them and finally got it with help from AGN members. However, I haven’t gotten a chance to test them yet. Have an alternate machined set on the way from elsewhere. I plan to test the sets against one another. The machined set is said to have been designed specifically for reducing harmonics or something or other that improves barrel stability in the Bulldog. The smith used unfamiliar terminology while explaining. He did explain in a way that made sense, I just don’t recall the exact details. I’ll have more input once I get a feel for them. What are you using or thinking of using? Have you encountered barrel stability issues with one of your airguns? 

 

[Guest]

Not any current guns. The Talonp setup is a short barrel so no problem. The other two are fine too. I am working on a .30 cal and was researching issues with unregulated setups with long barrels. I am thinking of machining my own running parallel for 1/3 the distance allowing still do me flex.

 

[biohazardman]

I have stabilized my Impact barrel in a couple of ways.

This way with a bushing just slightly longer than the distance between the shroud and the block of the gun.



And this way with a carbon fiber tube replacing the stock shroud. Once again it is just slightly longer than the stock shroud plus the distance from the shroud to the block of the gun.



Both of these mods put tension on the barrel as the shroud is tightened and both made the barrel much more stable.

 

[Guest]

I have stabilized my Impact barrel in a couple of ways.

This way with a bushing just slightly longer than the distance between the shroud and the block of the gun.



And this way with a carbon fiber tube replacing the stock shroud. Once again it is just slightly longer than the stock shroud plus the distance from the shroud to the block of the gun.



Both of these mods put tension on the barrel as the shroud is tightened and both made the barrel much more stable.

Smart

 

[biohazardman]

I figured this out just a few days before Ernest posted about it so he probly had it first but no matter it is an easy mod and werqs very well.

 

[Long_Gun_Dallas]

Yep, tensioning is pretty ideal. On a thin barrel you can also bond multiple carbon fiber tubes.... Or you can actually get a sheet of pre-impregnated fiber, and roll it straight onto the barrel. Of course you will need vacuum and an oven to cure. 

 

[Beezer]

A sorbothane X-Ring Deresonator on my FN FAL reduced group size by about 30%. It damps out harmonics in the steel barrel which travel up and down the barrel at about 20,000 feet per second. It works by mass dampening since it does not bear against anything but is just a cylindrical piece of sorbothane that fits around the barrel. I had my doubts at first, but it actually did some good.

The bending of a PCP air rifle barrel when firing is much less than a firearm, but the way it works is the same. Since pellets are several times slower than firearms bullets, but the speed of the resonances through the barrel is the same, on an airgun the X-Ring Deresonator will have about 4 times longer to damp out any resonances that are there.

On an airgun, some sorbothane sheeting, which I have used to damp resonances in musical gear such as turntables, can be placed betweeen the air tube and the barrel. The amount used and the pressure applied will just have to be worked out by experimentation. You can also take a long piece of sheet sorbothane and wrap it several times around a barrel and secure it by overwrapping with duct tape or ty-wraps and make your own X-ring Deresonator in any size or weight you want.

I bought my X-Ring Deresonator at Cabela's for around $15 several years ago.

Placing a moderator on an airgun barrel can improve accuracy by providing mass that slows the resonant frequency of the barrel. However, it has no hysteresis like sorbothane and cannot act like a shock absorber on a car works.

Using a mechanical stabilization attachment can help or hurt the accuracy of a barrel depending on where and what it is attached to.

 

[wjwillia]

Following this post.

 

[Springrrrr]

A lot of guns use the bottle as the stabilizing base. They often move nearly as much as the barrel. Pull tension or even pressure toward the receiver from the muzzle will work. I did that to my Gauntlet and it is very accurate (once the regulator settles in after a few shots.).