What the Heck?? Another new barrel Gimmick?

[ALO]

What the heck is the 'Gain Twist' barrel made by Bartlien. Does it really improve accuracy or do people just hope it improves accuracy. ,Or is it that someone spends over $300.00 - says 'OH YEAH, now my rifle shoots in .1's all day long. Now my rifle is the best!')Should we, who have regular high end barrels be worried?? And run to get this new Bartlien?

 

[Klong]

You better run out and get one! I do not own one yet! I can see where it may be possible to either extend barrel life or just be kinder to the bullet,resulting in better accuracy) by starting off with a little slower twist. I am not sure what the real objective is with the gain twist. I would guess better accuracy. Time will tell if it is a gimmick or not!!! I suppose the first rifled barrel compared to the musket may have looked like a gimmick to some?

 

[LHSmith]

Gain twist has been around quite awhile.
The latest versions have caused some excitement in the last few months........but...it's winter and it don't take much to excite die-hard competition shooters.

 

[treeman]

Gain twist has been around quite awhile.

yea, over a hundred years!!

 

[Eddie Harren]

I think that, along with BR shooters propensity to constantly try different stuff, the fact that Tony Boyer racked up 12 HOF points, in 1 year,it takes 10 to get in), using gain twist barrels, has increased their popularity greatly. The fact that he accumulated over 100 HOF points without gain twist barrels be damned.

 

[frankgreen]

Yes the gain twist has been around forever. The first guys we made gain twist barrels for we're the cast lead bullet shooters and some rimfire guys. The cast lead bullet shooters who shoot the Ballards, Win. Hi Walls in Schutzenfest matches wanted these types of barrels. A lot of Popes barrels where gain twist. The only thing I can say is that it acts like a mechanical choke on the soft lead bullet.

The next guys we made barrels for we're guys shooting the lathe turned solid bullets with driving bands because someone told them they work better in a gain twist. This I don't know.

The first benchrest shooters we made GT barrels for we're Lou Murdica and Tony Boyer. Both them and a bunch of other guys who have gotten them have been very happy. Are they the answer to a better barrel? Time will tell.

If I got it correct T.B. got all of those hall of fame points in only two matches. What do you say.

Later, Frank
Bartlein Barrels

 

[butchlambert]

A good answer Frank. Tony has told me numerous times that inferior equip. will not allow you to win. Anybody that thinks that Tony can win with below average equip. is wrong. He evidently likes what he sees in the gt Bartlein barrels or he wouldn't be using them.
Butch

 

[Lbart]

I have a Bartlein Gain Twist chambered in 6.5-284. While I haven’t had a chance to test it as much as I would like, it has shot at least as well as my other Bartlein barrels,which is great). The three test groups shot at 1k had elevation of 3.5, 4.97 and 3.13 inches. The twist varies from 9.188 to 8.25 inches at 30”.

Larry Bartholome
Team Berger

 

[butchlambert]

You should listen to Larry, if he isn't the best Fclass shooter in the USA, he is in the top 2.
Butch

 

[6BR]

I am very interested in the conversation. I don't own a Gain Twist barrel, however, I do own a 6mm 1-8 twist Bartlein Barrel. I am very impressed with Bartlein Barrels and I will be using them from now on.

 

[berettadave]

How does the 'gain twist' work? Does the twist actually get faster as the bullet progresses down the barrel? How much difference is there in the progressive twist? I am asking because in my feeble mind it seems that once the bullet is imprinted by the slower rifling it would peel the jacket as the twist got faster. Maybe this is not how it works at all and I'm just confused.

thanks
David

 

[Lbart]

Yes, the twist rate increases as the barrel gets longer. My barrel blank varied from 9.188 at the chamber end to 8.25 at 30 “. Since I had it cut off at 29.25” it a little less than 1 in 8.25 at the muzzle. This amount twist change doesn’t seem to affect fouling or accuracy at all.

One of the thoughts as to why it seems to increase aggregate performance is the bullet is always under a small increasing load as the rate increases. This perhaps dampens vibrations.

I understand Bartlein can make any twist rate change you want. You could go from a zero twist to a 1 in 8” if you wanted. All I know at this point is it doesn’t seem to hurt performance. And neither do Butch’s fine joy stick front rest tops.

Larry Bartholome
Team Berger

 

[falconpilot]

I understand that gain twist barrels work extremely well in long barrels..ie..larger military app's such as 2-50 mm cannons with 15-30ft barrels...As short as our barrel are, does it really mkae a difference???

 

[tillroot1]

I've got a new Bartlein in the works in .30 cal that will go from 10.5 twist down to 9.5 twist to shoot the big Sierra 240SMK.
Ron Tilley

 

[alf]

I'm getting a Rock gain twist chambered as we speak for a long range varmint gun in 6-284. It starts at a 1 in 8' for about the first half of the blank, increasing a 1/4',7 3/4') the last half, meaning it's not a steady twist increase from end to end.

Al

 

[zedsdead]

The big hand cannons by S&W in .460 have gain twist barrels. The ones chambered in .500 may also but I'm not sure. If memory serves me this was done to alleviate massive initial pressure upon ignition. Probably not the same reason as why it is being done in rifle barrels and kind of off topic, I just thought someone might find it as interesting as I did. In the one I've personally seen perform it did not seem to hurt accuracy at all. Three shots inside of an inch at 100yds from a big bore.

 

[Obtunded]

I have spoken with Krieger and they are producing gain twist barrels in 6mm. I understand that these will be available for purchase after May.

I'm not sure you can make a 6PPC or 6BR more accurate than they are with a good standard twist, but hey... bigger better mouse trap.

 

[GerryM]

It's an interesting concept. I believe it is best served with lead bullets though. Any and i mean any bartline barrel will shoot great.
I shoot a straight 13.5 6mm with 68 gr pills and do they shoot . How can you improve on a barrel that shoots zero groups.
. 087 etc Tony, and Fay probably could shoot a smooth bore and win. They are really dedicated shooters.
As they say practice makes perfect.

 

[marty55]

This concept makes alot of sense. Its been used in the medical field for years. Where I work, we inject a contrast media,dye) through a long hollow tube,catheter)to watch heart function. We use a power inject set for 30ml for 3secs at 450psi but we add a 'rise' of 2secs. The rise ramps up to the full pressure over the 2secs to keep the catheter from whipping around inside the heart and causing damage. Very applicable to rifle barrels