What we call Jug Choking...dated in the 1600's

[CoyoteJoe]

As one who makes a small business of jug choking shotgun barrels I would, of course, like to be able to say "oh yes, jug choking a flint fowler is totally traditional". Honesty compels me to say only "no one looking at the gun from a few paces will ever know the difference, until they see you dropping doves at 50 yards". :haha:
The process described in that old text was not a "king's secret" for heaven's sake, it was published, it just wasn't a very good idea. :haha:

 

[roundball]

Another thing I've picked up from interaction on this subject is the term 'recess choke'.

Was always puzzled at how often the term "Jug Choke" seems to be used but gets very few hits on it doing google searchs...yet when searching "recess(ed) choke(s)" there's quite a bit and some of them back into various documents referencing W. W. Greener's information...

 

[paulvallandigham]

Joe. It wasn't published until 1718, and the inventor may have been long dead by that time, and the process already lost. So, yes, it may have been a King's secret. Since so few people could read back then, ( The age of Enlightenment is considered to have begun later in the 18th century ) Even the fact that this was published in Portuguese does not mean it was read or even known by many people outside portugal.

Again, I don't want to argue with you. I think history fails us with needed additional facts to say one way or another. However, thee are still books in archives in basements in Spain, and even in the Vatican, that have not yet been Translated, or even catalogued for researcher to find. We may yet find something else about this subject.

I am delighted that Round Ball found this text, and its translation, which seems to say what he thought it said. If so, it is talking about a form of jug choke.

 

[Russ T Frizzen]

I thought Ferdinand and Isabella were Spanish...

 

[benvenuto]

Gentlemen!
I read the book 15 years ago and about 8 years ago I scanned some of the pages and wrote about them on my website:
On ye most excellent work Espingarda Perfeyta

Please note the engraving of the gun barrel explaining what the authors mean, 8th picture down. The picture should enlarge when you click on it and settle all disputes

 

[Capt. Jas.]

What a wonderfull website dedicated to a super old book! Thanks for sharing it. The image of the interior of the barrel shows clearly the barrel treatment commonly known and used by some makers into the 18th century.
A picture paints a thousand words.

 

[roundball]

Gentlemen!
I read the book 15 years ago and about 8 years ago I scanned some of the pages and wrote about them on my website:
On ye most excellent work Espingarda Perfeyta

Please note the engraving of the gun barrel explaining what the authors mean, 8th picture down. The picture should enlarge when you click on it and settle all disputes

If by engraving do you mean the sketch of the bore's shape, showing a tapered constriction choke in the middle of the bore's length...

 

[Capt. Jas.]

Gentlemen!
I read the book 15 years ago and about 8 years ago I scanned some of the pages and wrote about them on my website:
On ye most excellent work Espingarda Perfeyta

Please note the engraving of the gun barrel explaining what the authors mean, 8th picture down. The picture should enlarge when you click on it and settle all disputes

If by engraving do you mean the sketch of the bore's shape, showing a tapered constriction choke in the middle of the bore's length...

That's the engraving. Not a constriction though but cylinder bore that has been relieved at breech and muzzle as described in my first post on this thread. Not a jug choke. For it to be jugged it would need to be cylinder towards the breech end then opening up for a space, then back down to cylinder just before the muzzle to create a constriction. The exact opposite of what is pictured.

This was not a forgotten technique only held secret in Portugal but was known and sometimes used even by English gunmakers on in to the 18th century. As the 1789 reference indicates above, it's effectiveness was questionable.
(kind of reminds me of shotgun barrel and tube porting today.) :rotf:

 

[roundball]

Thanks, but I understand what a jug choke is...I was just getting back to the poster with a question

 

[benvenuto]

Thanks Capt. Jas! :hatsoff: