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Very Hot Topic (More than 25 Replies) Opinions on "choked" barrels? (Read 3274 times)
ScrapMetal
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Opinions on "choked" barrels?
Nov 18th, 2021 at 1:49am
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I'm planning to get a BRC barrel in .40-70SS for a Remington Hepburn I'm building from castings.  The only thing I need to decide at this point is if it is worth it to go with a "choked" barrel.

Are there legitimate reasons for one, and advantages/disadvantages or is it just the latest "greatest thing"/fad?

Thanks,

-Ron
  
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JLouis
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Re: Opinions on "choked" barrels?
Reply #1 - Nov 18th, 2021 at 8:55am
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It is not really a fade Pope, Darr and RKS have all made choked barrels and there may be more I am not aware of.  
I personally would consider it to be an advantage.
  

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rafter3c
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Re: Opinions on "choked" barrels?
Reply #2 - Nov 18th, 2021 at 10:23am
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Are there legitimate reasons for one, and advantages/disadvantages or is it just the latest "greatest thing"/fad?
Hello Ron,
Just for the record I developed the choked barrel for Borchardt Rifle Corp. When I first started shooting Schuetzen , around 1980, I was told the first few important things I should remember was that Borchardt had bad triggers, lock time was all important and choked barrels shot better than standard barrels. I did figure out a fix for the Borchardt trigger with a BRC Borchardt trigger job a few years back. Al took a chance on my idea for the choked barrel in .321" 1-14.92 twist. In testing of the choked barrels the positive results were quick. I was getting under 1/2 MOA groups at 100 yards with my warm up loads and culled bullets. As one can see my bench rest is traditional style nothing like we see today at the Schuetzen matches. Shooters like JLouis and others should be able to better my groups posted. On another related subject Al called yesterday evening. I usually ask Al how the shop is doing at some point in our conversation. BRC has received a number of barrel orders and Clay is devoting most if not all his time producing barrels. Al also said he had expanded the barrel selection. For the record I have no monetary involvement with BRC. I am a long time  friend with Al and Clay.
Ken Lewis
« Last Edit: Nov 18th, 2021 at 12:08pm by rafter3c »  
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oneatatime
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Re: Opinions on "choked" barrels?
Reply #3 - Nov 18th, 2021 at 11:09am
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Alexander Henry’s barrels were noted for their accuracy in the 19th century and he choked them. My two new barrels for my 44 1/2 are BRC choked (25-35 and 32-20) and will be ready to be tested in a few days. Looking forward to it. My gunsmith remarked on their smoothness.
  
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ScrapMetal
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Re: Opinions on "choked" barrels?
Reply #4 - Nov 19th, 2021 at 4:11am
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Thanks much for the insights guys I'll definitely give the choked barrel a try when I put in my order to BRC.

Now that has been decided I'd like to understand it a bit better. In my head I can see where that might increase the velocity of the bullet but what is the reason/theory as to why the choked barrels are more accurate?   

Thanks again,

-Ron
  
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boats
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Re: Opinions on "choked" barrels?
Reply #5 - Nov 19th, 2021 at 6:38am
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Many Anschutz Rimfire barrels are choked. Think the Determining factor is weight allowed class the rifle is being built for. Heavy smallbore prone and position match barrels are almost all choked.

I believe can’t say sure they choke by leaving a larger outside Diameter on the blank when button rifled. Two most accurate Rimfire rifles I have owned are Anschutz super match and Douglas barreled CPA. Anschutz was choked the CPA not.

Can’t explain how it works though 

Boats 
  
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Premod70
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Re: Opinions on "choked" barrels?
Reply #6 - Nov 19th, 2021 at 8:55am
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Question; what makes a choked barrel choked? Lapping, constricting, and others enter the mind but curious as to what method is currently in vogue.
  
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rafter3c
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Re: Opinions on "choked" barrels?
Reply #7 - Nov 19th, 2021 at 9:36am
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The point is I figured out a way to choke the muzzle end of a barrel at a price most shooters can afford. My original plan was to get 4" of choke, around .0005". I went with around .0004 for RF. BRC is using my original drawing. I did choke a barrel 5 1/2" and got excellent results. The targets 22RF shot on brcbarrels.com was shot with 3 1/2" choke. I shot the same loads in choked barrels as with standard Douglas barrels with no change in recoil. I try to use the KISS method in shooting. It's the mental part that's hard for OH. I think the choke on muzzle end of a barrel puts the bullet to sleep which in turn helps stabilizes it in flight. 
Thanks for all the positive posts.
Ken
« Last Edit: Nov 19th, 2021 at 2:07pm by rafter3c »  
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OLD TUCK
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Re: Opinions on "choked" barrels?
Reply #8 - Nov 19th, 2021 at 11:26am
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I firmly believe that a straight hole at the beginning is one of the important issues 
for a good shooting rifle. I am not sure of the benefit of choking but I suspect that 
folks that do choked barrels are just those types of Craftsmen that take the time to get a straight hole make the best Barrels. The Bullet is in constant fit all the way thru the barrel, no opportunity to spring or relax on its way. Just my thought on the subject, HTH FITZ OLD TUCK. Smiley
  
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Premod70
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Re: Opinions on "choked" barrels?
Reply #9 - Nov 19th, 2021 at 12:01pm
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rafter3c wrote on Nov 19th, 2021 at 9:36am:
The point is I figured out a way to choke the muzzle end of a barrel at a price most shooters can afford. My original plan was to get 4" of choke, around .005". I went with around .004 for RF. BRC is using my original drawing. I did choke a barrel 5 1/2" and got excellent results. The targets 22RF shot on brcbarrels.com was shot with 3 1/2" choke. I shot the same loads in choked barrels as with standard Douglas barrels with no change in recoil. I try to use the KISS method in shooting. It's the mental part that's hard for OH. I think the choke on muzzle end of a barrel puts the bullet to sleep which in turn helps stabilizes it in flight. 
Thanks for all the positive posts.
Ken

Now, the point is are you or are not willing to enlighten use as to your method of ‘choking’ the barrel. So far all I see is snake oil promotionals.
« Last Edit: Nov 19th, 2021 at 12:12pm by Premod70 »  
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boats
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Re: Opinions on "choked" barrels?
Reply #10 - Nov 19th, 2021 at 12:45pm
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If I was BRC would not divulge the method either. Barrels  a competitive business & one vs the other much promoted on this site, I believe to shooters advantage . 

Choke has been the method used by large manufacturers with methods not generally available to small shops. If they have figured  it out more power to BRC

Off topic a bit shotgun shooters believe strongly little bit of choke patterns more consistent than cylinder barrels. Rarely see a competitive skeet shooter using cylinder bore.

Boats
  
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Re: Opinions on "choked" barrels?
Reply #11 - Nov 19th, 2021 at 12:56pm
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rafter, is the choke you mention correct?   Should it be .0005 rather than .005.  I believe it was Clay that  told me the choke was tenths not thousands.  A 32 choked barrel I have takes the same size gauge pin on both ends, using thousands pins not ten thousands.
Bob
  
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Chuckster
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Re: Opinions on "choked" barrels?
Reply #12 - Nov 19th, 2021 at 1:18pm
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Believe rafter3c has explained how to choke a button rifled barrel, makes sense and ingenious.
How was it done on a cut barrel? Lapping, yes, but think a uniform taper is the natural result of using a square bit reamer.
This was used by Pope and many others. The wood backing wears slightly and uniformly from breech to muzzle.
My experience is this works fine for muzzle loaders but too much choke for breech loaders. About .001-002" choke.
Need to find a backing material that wears less, maybe HDPE. Rifling cutter needs some spring for uniform grove depth.
That said, hand making a barrel is two weeks work for a $400 barrel, so not practical, but fascinating.
Chuck
  
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Re: Opinions on "choked" barrels?
Reply #13 - Nov 19th, 2021 at 1:38pm
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Seems everybody knows but me about this technique. Is there a thread that explains the process?
  
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JLouis
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Re: Opinions on "choked" barrels?
Reply #14 - Nov 19th, 2021 at 4:18pm
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I do agree Boats as I do know how Barry Darr choked his barrels and also unknown to most they were also buttoned rifled. His own process is one that he had to figure out. Why would he want to pass it onto anyone else in the same competitive barrel making business.  And I am surely not going to do so either. 
Snake oil it is not and now one is being forced to buy one.
  

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