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Double Rifles, Single Shots & Combinations >> Paradox and Bore Guns

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gmark1
.224 member


Reged: 06/03/19
Posts: 2
Loc: illinois
size of a 4 bore barrel
      #325593 - 08/03/19 10:13 PM

I am planning to build a single barrel 4 bore muzzleloading black powder rifle, and am wanting to know barrel dimensions of the old 4 bore rifles. Searching the internet, I can come up with bore, weights, and barrel lengths, but nothing on breech and muzzle diameters. I would appreaciate it if someone can give me the outside dimensions of a 4 bore barrel. Thanks so much.

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Daryl_S
.577 member


Reged: 10/08/05
Posts: 18832
Loc: Beautiful British Columbia, Ca...
Re: size of a 4 bore barrel [Re: gmark1]
      #325612 - 09/03/19 10:04 AM

I can take a semi-educated guess for you in building a 4bore rifle.

I think most (maybe all?) of the 4 bore singles used in Africa, aka Francis Selous, were smoothbore fowlers shortened in the barrel length for handiness in use. Selous' 4bore single was a Dutch 4 bore fowler, I'm quite sure - read that somewhere. I do not know the measurements of the breeches.

4 bore rifle = 1.052" + .012 = .012" = 1.076 groove to grove.

Add .200" per side for decent side-wall thickness (if 1137 or 4140) and you have 1.476", pretty close to 1.5", which is even better - in my opinion.

looks like fun - not.



this 6 bore, sold for $800.00 at auction in Feb, 2019



--------------------
Daryl


"a rifle without hammers, is like a Spaniel without ears" Edward VII


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szihn
.400 member


Reged: 24/06/07
Posts: 1558
Loc: Wind River Valley, Wyoming
Re: size of a 4 bore barrel [Re: Daryl_S]
      #325618 - 09/03/19 12:57 PM

I have made several. If you want some pointers let me know.

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Longknife
.300 member


Reged: 17/04/08
Posts: 134
Loc: Illinois
Re: size of a 4 bore barrel [Re: szihn]
      #325636 - 10/03/19 04:22 AM

You mighty give these guys a call to see what is available. I'm sure this is where szhin gets his barrels,,,Ed

http://www.thegunworks.com/custprodgun.cfm?ProductID=514&do=detail&Cat2Option=yes

Edited by Longknife (10/03/19 04:23 AM)


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szihn
.400 member


Reged: 24/06/07
Posts: 1558
Loc: Wind River Valley, Wyoming
Re: size of a 4 bore barrel [Re: Longknife]
      #325644 - 10/03/19 07:07 AM

No not all of them, but Joe Williams (Oregon barrels) does a good job. I would not talk you out of an Oregon Barrel. You would not be unhappy!

I have used Ed Rayl but he is so back-logged that it may take a lot of time to get one from him.


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Wayne59
.375 member


Reged: 20/06/15
Posts: 962
Loc: Lagrange Ga. USA
Re: size of a 4 bore barrel [Re: szihn]
      #325645 - 10/03/19 08:29 AM

Joe's barrel maker is on the mend right now. They might have one in stock other wise it is going to be a while.

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Ash
.400 member


Reged: 10/05/11
Posts: 1487
Loc: QLd, Australia
Re: size of a 4 bore barrel [Re: Wayne59]
      #325895 - 16/03/19 10:02 AM

Iíll plus 1 to the above, bought 2 barrels from then and am very happy with them. They even rushed them for me as I had a time restriction.

Cheers,
Troy.

--------------------
.


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Kynoch
.224 member


Reged: 11/02/05
Posts: 28
Re: size of a 4 bore barrel [Re: Ash]
      #326311 - 24/03/19 03:36 AM

I have one of Joe's barrels on a 4 bore rifle that they built about 10 years ago. The ball mold that I got from them is .975". (Not exactly true "4 bore" but I understand a lot of variation existed in actual bore size.)

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gmark1
.224 member


Reged: 06/03/19
Posts: 2
Loc: illinois
making progress [Re: Kynoch]
      #326325 - 24/03/19 01:03 PM

making some progress on the barrel. Started with a 2-1/2" chrome shaft, 27" long. Have the outside rough turned to about 2", and been drilling a hole thru it. So far, got a 55/64" hole all the way thru so far. I dont have a coolant thru drill system, so its slow going, but Im getting there. If this gun turns out good, I might have to make a 2 bore.

Edited by gmark1 (24/03/19 11:30 PM)


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