Author Topic: Joel Ferree, a resurrection.  (Read 2175 times)

Offline Mule Brain

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Re: Joel Ferree, a resurrection.
« Reply #50 on: August 05, 2022, 09:56:56 PM »
Thanks for treating such a great piece of American history with such respect.

I commend you for a job well done!  Made my whole day   
Those Without Arms Cannot Defend Freedom

Online ScottH

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Re: Joel Ferree, a resurrection.
« Reply #51 on: August 06, 2022, 01:26:33 AM »
Wonderful pictures of a fine piece! Thanks! The restoration work is amazing.

Is the barrel swamped and if so how much? Is it definitely a smooth bore?

Drop at the comb and heel?

Thanks,
Scott

Offline 120RIR

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Re: Joel Ferree, a resurrection.
« Reply #52 on: August 06, 2022, 07:22:09 AM »
Ain't she a peach and yes, John did an outstanding job to put it mildly. 

Definitely a smooth bore and yes, the barrel is swamped - notably so.  John could fill you in on the details for the next couple of weeks.   :)

Offline JTR

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Re: Joel Ferree, a resurrection.
« Reply #53 on: August 06, 2022, 07:29:10 PM »
Mule Brain, ScottH, Thanks for your comments and I'm glad you like it!
I like it too, and reluctantly am going to have to give it back to 120RIR pretty quick.  :-\ 

As for the measurements; At the muzzle the bore is right at .600", but about 1 1/2" in goes down to about .570" or so. When I had the breech plug out, looking down the bore there was no sign of any rifling, current or previous.
For the swamp, right at the muzzle it measures .940". Four inches back its down to .860", and eight inches back its down to .830". Fourteen inches back it's still about .830", then slowly increases going back the breech which is about .950".
Drop at the comb is about 1 5/8", and at the heel 3 1/2". It fits me perfectly; When I toss it up to my shoulder, I'm looking right down the sights!
Overall, the gun is a slender gal, and weighs in at 7 3/4 lbs. 

John
John Robbins

Offline WESTbury

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Re: Joel Ferree, a resurrection.
« Reply #54 on: August 06, 2022, 07:40:18 PM »
John,

With regard to barrel swamp, was there a general "standard", for want of a better description, as to the degree and rate of barrel size reduction and then expansion near the muzzle? Or was it just by "feel"?

Kent
"We are not about to send American Boys 9 to 10 thousand miles away from home to do what Asian Boys ought to be doing for themselves."
President Lyndon B. Johnson October 21, 1964

Offline Mattox Forge

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Re: Joel Ferree, a resurrection.
« Reply #55 on: August 06, 2022, 09:27:29 PM »
I have found that most jeager (and their derivative barrels, early English rifles and American guns) barrel swamps are created by drawing a parabola (which is very easily done with a pair of dividers and a straight edge) between Line A and Line B as shown in the attached image. Line A is drawn from the breech extremity to the bore at the muzzle and Line B is drawn between the muzzle extremity to the bore center at the breech.
I applied this method to the bore, length, breech, and muzzle measurements of the Ferree barrel found in the various discussions and the swamp predicted, .83 at 11 inches from the muzzle, matches very closely with the dimensions of the swamp supplied by John in the message above. The barrel in the drawing is shown at 1/10th its actual length to illustrate the method.


The artistry was in the selection of where to pick the start and end points of the parabola guide lines. The English gunmakers tended for less flare at the muzzle by picking a point closer to the breech extremity.

Mike

Offline JTR

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Re: Joel Ferree, a resurrection.
« Reply #56 on: August 06, 2022, 09:41:32 PM »
That's very interesting, Mike!
At 11" back from the muzzle, the Ferree measures about .825"
John
John Robbins

Offline Mattox Forge

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Re: Joel Ferree, a resurrection.
« Reply #57 on: August 06, 2022, 09:56:05 PM »
John,
The dimension is rounded off in the drawing to .83 it is actually .827 or something like that. I turned the computer off so I can't check right now. I don't believe that this stuff was just eyeballed, these guys were just as much engineers as modern engineers, maybe more so. I don't know if they always made drawings, but a grinding template/pattern would be a simple thing for them to have laid out on a piece of wood, cut to shape, and used to check the barrel grinding.
Mike

Offline JTR

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Re: Joel Ferree, a resurrection.
« Reply #58 on: August 10, 2022, 09:05:36 PM »
I agree. These guys, for the most part, certainly weren't a bunch of ham fisted bumblers. Given the tools and lightening they had to work with, most, but not all, of the guns I've owned or worked on have had a fine degree of metal to wood fitting still evident after two centuries or more. Maybe not David Rase quality barrel inletting, but as good as the high quality hand inletting of today.
John   
John Robbins