Wacky barrel sleeving idea?

[jfseaman]

From an engineering standpoint and from a materials standpoint with the goal of straight and predictable harmonics....

Tensioned barrels have efficacy
Clad barrels have efficacy
Both together have efficacy

The remainder is in the execution. Carbon fibre, aluminum tube, bed liner ( ), steel tube. Tightly bonded to the barrel core (carbon fiber, bed liner) or with an adhesive medium between (all tube methods) or not bonding at all with pure tensioning.

They have all been tried. AFAIK, no "scientifice" study or measurement that would pass a peer reviewed test has been conducted.

I have a couple, oops, a few, oops, some carbon wrapped barrels.

I have a barrel I want done with either the http://www.teludynetech.com/ method or carbon wrap by Chris that used to work at Benchmark. Not decided. It's long and "thin for caliber". I am looking for droop control and harmonic dampening.

IMHO: There are no "wacky ideas", those are what great inventions are made from...

 

[jfseaman]

Oh and I am pretty sure I'm going down the pure tentioned barrel route with at least one project. Using a shotgun barrel and action to make something different and see how it shoots.

 

[DaveTooley]

Try putting a barrel under compression. That works also.

 

[MClark]

We had a rifle/barrel come in to be replaced that was sleeved and the gap between the barrel and tube filled with what appeared to be plaster..
I don't know how it shot but the barrel looked good inside and it was being replaced. I didn't talk to the customer.

M

 

[jfseaman]

Try putting a barrel under compression. That works also.

What!

My brain hurts now. Please please explain this.

 

[jfseaman]

We had a rifle/barrel come in to be replaced that was sleeved and the gap between the barrel and tube filled with what appeared to be plaster..
I don't know how it shot but the barrel looked good inside and it was being replaced. I didn't talk to the customer.

M

Would have been fun to analyze what it was.

 

[jdh47]

I would think that a sleeve attached on both ends, filled with a media that allows for expansion, contraction and dampens harmonics would tend to help with accuracy all other things being equal. The Teludynetech people seem to think so.

Joe

 

[jfseaman]

Yup.

The fun is what media. Of course it's a trade secret. I'm not interested in what it is if it works. That is why I am leaning more to Teludynetech vs. Frozen Fibre.

 

[DickE]

There was an article in Precision Shooting magazine about 8-10 years ago about doing something like you are interested in. Norman Johnson, who presented many articles in the magazine, sleeved an skinny barrel with a thin metal tube, drilled two holes in it one at each end, capped the muzzle and filled it with silicon RTV. Had before and after targets, and it did indeed increase the accuracy of the rifle.

 

[smokinghole]

Lothar Walther had aluminum sleeved barrels. They have since been removed from their US website. I aways wanted one but I'm guessing they were starting at $900 and they'd only sell you one if a specific Smith chambered and such for you. Seemed like a better idea compared to CF wrap. The Al would shed heat and it's more durable than carbon wrap. I think LW called them ultra light.