Play the vids

http://www.teludynetech.com/video.cfm

Anyone else having trouble running some of the videos?

Instead of just playing them, my computer prompts me with the question "Do you want to open this file" then downloads it. I think they are in a strange format.

That is some impresive footage there boom stick. 20rounds from the 300WM as fast as he could get on target and it was still cool to the touch. Be interesting to see where this goes, as in the competition guys etc.

Von Gruff.

It will also be interesting to see this applied to machine guns. You could get mini-gun+ rates of fire out of a single barrel.

So, how does he do it?

He puts a jacket around the barrel, and fills the jacket with a material HE HAD IN HIS SHOP.

I'm thinking insulating spray foam?

I saw no spectacular accuracy with it. Any decent RemSavagChester can do better than that. Many Mosin Nagants will do 1 in groups with surplus anyway. Most of the accuracy claims were with poor accuracy guns that were re-barreled. It ain't news that muzzle brakes reduce recoil. The news clip mentioned a proprietary chemical involved in the jacket system. With heat control being a major claim, it leads me to believe they are sandwiching heat sink paste between the barrel and the jacket. I see absolutely zero need for the hunter or law enforcement. It may have target and military applications. The heat has to go somewhere. What happens when the the heat sink material becomes temp saturated? With extended shooting it could actually damage the barrel.

Bob, it sounded to me like they were not rebarreled, they just put a shroud with some goop in it over the barrel.

If this tightens groups of inacurate rifles, what will it do to accurate rifles?
Heat dispersion and stiffening the barrel are great. The removeable break is great. Seems like a great price for the goods.

This was done in an American Rifleman article about 40 years ago.
Of course the outer tube may be cool but the barrel may still be flaming hot.

How about the 458 Lott. It has 74 ft pounds of recoil. The rifle weights 10 LBS and shoots a
500 gr bullet to 2367fps thats a solid bullet.

Well heat aside if it tightens groups for a few hundred bucks that would be a deal for some

quote:

Originally posted by SR4759:
Of course the outer tube may be cool but the barrel may still be flaming hot.

Bingo!

That's what I'm thinking.

If the heat dissipation is what they say it is then you should be able to take a very overbore cartridge and fire continuously without any ill effects. In principle the life of the barrel would be extended beyond anything we've ever seen. That is assuming that it works the way they say it does.

quote:

Originally posted by txhunter77:

quote:

Originally posted by SR4759:
Of course the outer tube may be cool but the barrel may still be flaming hot.

Bingo!

That's what I'm thinking.

If the heat dissipation is what they say it is then you should be able to take a very overbore cartridge and fire continuously without any ill effects. In principle the life of the barrel would be extended beyond anything we've ever seen. That is assuming that it works the way they say it does.

If you watch the whole video of him shooting the 20 rounds of .300 WM hs sticks his pinky in the chamber. I think if the barrel was flaming hot on the inside then he wouldn't be able to hold it against the chamber as long as he did. I'm interested but I don't think I'll spend my money just yet.

Another thing is how much weight does this add to the rifle? I saw where they offered to do it in CM, SS, or alunimum but never once did they say how much weight was added to the the rifle on average. I don't want to be carrying a 10+ lbs rifle very long up here in the mountains.

Bluingsalt.

For manny years it has been known to put salt inside boringbars to reduce vibrations. Combined with salts heataccumulating capasity, it sounds like the answer he has gone for.

By turning down the original barrel, adding a thinwalled outertube, filling the gab betwen with bluingsalt, you ought to acheve what he claims, with a relative limited increase in wheight 1 - 2 pound

quote:

filling the gab betwen with bluingsalt

Makes sence (I think). And it is something he would have in a gun/machine shop.

quote:

filling the gab betwen with bluingsalt

Hot bluing salts are virtually identical in appearance and effect to common lye. Don't see how that could work any magic.

If you can replace 50% of wheiht from the steel with water, you would increase the capacity to accumulate heat by 5 times.
It requires 10 times as mutch energy to heat 1 pound of water, as it requires to heat 1 pound of steel 1degre.
A saltmixture has even better capasity 50% - 100%. combine this heatabsorbsion capasity with the well known vibrationdampening effect of a saltfilled boringbar, and her you go

Whatever the voodoo mixture, he is not charging much for what he does it seems. I would like to see some more scientific evaluations done but hey. I think he should make chambered barrels for screw on DIY projects.

On a slightly different note, has anyone heard of anybody experimenting with a ceramic barrel?
I read a few years ago that, I believe, Ford had tested ceramic engine blocks that needed no coolant what so ever.

There was an article written in a major magazine recently about this.

It's more involved and frankly is quite amazing. I'll try to find it later and post a couple of tidbits. I thought it was one of the more amazing breakthroughs I've seen, but it'll probably not go anywhere for now.

It can be done to about any rifle and it will make it shoot long strings of small, tight groups w/o the barrel throwing flyers and the groups will shrink from the originals before the jacket, too.

The article was done by David Fortier of RIFLE SHOOTER.
The jacket was developed by Alan Adolphsen. He's a former sniper, Army Reserve, and a LR competitor. He wanted a remedy to hot barrels and groups markedly opening up in response to heat when he competed in long range shooting.
It's a standard barrel of 1.25" diameter with an outer sleeve of carbon, stainless steel, or aluminum or other choices you make. Then a proprietary mixture of metals is added.
To demonstrate his barrel, which by the way is not quite as heavy as a bull barrel and can be considerably lighter than a bull barrel depending on the metal one chooses, he took an "old Lee Enfield" marred from corrosive ammo, installed a jacket, and proceeded to shoot 10 rounds of Wolf ball into 1.5 MOA at 500 yards. He would fire 20 or 30 rapid shot strings with no appreciable heat or mirage.
A Rem Sendero 7 RM put 5 shots into 2.5 MOA at 500 yards immediately after a 20 shot string and this was a rifle with 3000 rounds fired.
A new Savage 308 was fired as is and then he installed ajacket. Accuracy was cut in half and 3 ten shot groups at 500 yards averaged 1.2 MOA. He, then rapid fired 20 rounds from a 338 RUM, grabbed the rifle with this hands and put it against his cheek.
The jacket deals with harmonics and heat, groups shrink and stay that way through long strings of 10 or 20 or 30 shots fired.