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#553413 - 08/27/19 10:53 AM Gain Twist...does it work
pamtnman Offline
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Does anyone here have anything substantive to add to the notion of gain twist? I have been asking around and reading and talking to one barrel maker about it, and there is nothing definitive. Best I can find is that most British BPE gun makers 1850-1900 used gain twist rifling, as well as tapered bores. Charles Lancaster was a big believer in gain twist and he used it in his successful oval bore cannons.
I ask because I am in the beginning stage of building a percussion rifle. Colerain makes gain twist barrels, and they will make one for this project, if asked.
Thanks!
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#553421 - 08/27/19 11:46 AM Re: Gain Twist...does it work [Re: pamtnman]
Der Ami Offline
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pamtnman,
Give it a try and let us know how it works out.
Mike

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#553444 - 08/27/19 01:22 PM Re: Gain Twist...does it work [Re: Der Ami]
pamtnman Offline
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Der Ami, august gunmaker Bill Slusser swears by the high quality of Colerain's gain twist barrels. I think several of our flintlocks built on Colerain barrels have gain twist, but I cannot recall. My son's child-size .45 is a tack driver. The real question is not if gain twist works, or not, but if it is possible to create a middle-ground twist rate that serves equally both long conical-type bullets and also for patched round balls.


Edited by pamtnman (08/27/19 03:29 PM)
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#553455 - 08/27/19 04:33 PM Re: Gain Twist...does it work [Re: pamtnman]
Der Ami Offline
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pamtnman,
That sounds like a good question to test.
Mike

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#553474 - 08/27/19 08:20 PM Re: Gain Twist...does it work [Re: Der Ami]
pamtnman Offline
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Der Ami, it is a great question, and I am building a rifle to definitively kill critters, so I am trying to get this settled in my mind before we put the barrel in the stock channel. Might be that the builder and I just have go with what we know.
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#553488 - 08/27/19 11:29 PM Re: Gain Twist...does it work [Re: pamtnman]
craigd Offline
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Originally Posted By: pamtnman
....The real question is not if gain twist works, or not, but if it is possible to create a middle-ground twist rate that serves equally both long conical-type bullets and also for patched round balls.

Nothing but the best of luck with the project. I'd consider asking your chosen barrel maker what their favorite barrel configuration is and what specific projectile is matched to it. I'd think middling barrels are already plentiful. I believe if you discuss it with the barrel maker, purely for twist rate, the bullet will only be affected by the final twist of the gain. It may matter if the bullet encounters different affects cause by the gain, and how skillfully the barrel making was executed. There are modern gain twist barrel makers, one more so, that have quite a record of accuracy accomplishment under competition conditions with correctly matched lead bullets. Only thought, again best of luck.

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#553505 - 08/28/19 08:05 AM Re: Gain Twist...does it work [Re: craigd]
pamtnman Offline
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thank you, Craig. Good suggestion, and I appreciate the encouragement
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#553511 - 08/28/19 09:54 AM Re: Gain Twist...does it work [Re: pamtnman]
Der Ami Offline
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pamtnman,
I am too old to finish the projects I already have and was looking forward to watching you play with gain twist rifling.
Mike

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#553538 - 08/28/19 05:19 PM Re: Gain Twist...does it work [Re: pamtnman]
pamtnman Offline
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Well let's see how things work out, Mike. I am set on the barrel length and outer dimensions, its caliber, the stock style and wood, the butt plate, trigger guard, trigger and other furniture. This gain twist bit is the last thing, and it is unsettled. Thank you for being supportive!
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#553541 - 08/28/19 07:05 PM Re: Gain Twist...does it work [Re: pamtnman]
Der Ami Offline
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I'm looking forward to it.
Mike

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