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

DarylS
.700 member

Reged: 10/08/05
Posts: 26642
Loc: Beautiful British Columbia, Ca...

Re: 4 bore ball size - sorry should have posted here initial
02/12/08 04:08 AM

Steve - I am surprised you recommended such a thin patch with a small ball - perhaps a typo on sizes. A .012" patch will only bring the .025"-under ball to .0005" under bore size, per size, .001" total smaller than the bore - with no compression at all to the lands - what abotu the grooves? - the gas cutting from flame and gasses blowing down all the grooves about this combination will incinerate the patch. The patched ball combination must reach the bottom of the grooves or very nearly so. All the barrels I've ever shot ahve required ball-patch combinations to be .004" or more OVER groove diameter creating compression in the bottom of the grooves. This prevents any gas blowby and ensures clean shooting without fouling buildup.

So- if the ball is .022" under bore size and the bore size(not grooves) is 1.015", the ball would be .990" in diameter. If the grooves are .012" deep, the groove depth is 1.015 + .024" = 1.039". A .99" ball would require 1.039 - .99 = .049". .049" divided by 2 = the patch required to reach the bottom of the grooves which would be .0245". 12 pound denim should work OK. This will run around .023" to .025" in thickness.
The muzzle should be crowned like Steve's build of the single 2 bore rifle of Bigdog's gun. I would further smooth the angle of the grooves and tops of the lands with emery cloth on a tool or my fingers, rotation the barrel. It's a nice crown for loading snug combinations - snug combinations shoot cleanly, no buildup of fouling and no wiping while shooting needed.

Mink-oil as sold by Track, or SPG bullet lube mized with neetsfoot oil. Both of these work well. The SPG mix probably better of the two. SPG is a bullet lube for BP ctg. bullets. Mixerd with neetsfoot oil, it makes a good patch lube grease. Try 50/50.

Good shooting.

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

"a gun without hammers is like a Spaniel without ears" King George V

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Subject	Posted by	Posted on
4 bore ball size - sorry should have posted here initially	billeastern	29/11/08 07:43 AM
Re: 4 bore ball size - sorry should have posted here initially	DarylS	29/11/08 06:26 PM
Re: 4 bore ball size - sorry should have posted here initial	billeastern	30/11/08 01:05 AM
Re: 4 bore ball size - sorry should have posted here initial	ALAN_MCKENZIE	01/12/08 12:28 AM
Re: 4 bore ball size - sorry should have posted here initial	szihn	01/12/08 02:59 AM
Re: 4 bore ball size - sorry should have posted here initial	billeastern	01/12/08 04:04 AM
Re: 4 bore ball size - sorry should have posted here initial	DarylS	01/12/08 04:38 AM
Re: 4 bore ball size - sorry should have posted here initial	ALAN_MCKENZIE	02/12/08 12:43 AM
Re: 4 bore ball size - sorry should have posted here initial	billeastern	02/12/08 02:08 AM
Re: 4 bore ball size - sorry should have posted here initial	billeastern	02/12/08 02:59 AM
Re: 4 bore ball size - sorry should have posted here initial	DarylS	02/12/08 04:08 AM
Re: 4 bore ball size - sorry should have posted here initial	Yogi000	02/12/08 05:25 AM
Re: 4 bore ball size - sorry should have posted here initial	billeastern	02/12/08 06:20 AM
Re: 4 bore ball size - sorry should have posted here initial	billeastern	02/12/08 12:34 PM
Re: 4 bore ball size - sorry should have posted here initial	Yogi000	03/12/08 01:14 AM
Re: 4 bore ball size - sorry should have posted here initial	billeastern	03/12/08 01:40 AM
Re: 4 bore ball size - sorry should have posted here initial	Yogi000	03/12/08 01:54 AM
Re: 4 bore ball size - sorry should have posted here initial	DarylS	03/12/08 06:43 AM
Re: 4 bore ball size - sorry should have posted here initial	billeastern	03/12/08 07:04 AM
Re: 4 bore ball size - sorry should have posted here initial	billeastern	03/12/08 07:10 AM
Re: 4 bore ball size - sorry should have posted here initial	DarylS	04/12/08 03:33 AM
Re: 4 bore ball size - sorry should have posted here initial	billeastern	04/12/08 05:00 AM
Re: 4 bore ball size - sorry should have posted here initial	calpappas	23/11/09 02:31 PM
Re: 4 bore ball size - sorry should have posted here initial	calpappas	23/11/09 02:27 PM
Re: 4 bore ball size - sorry should have posted here initial	calpappas	26/10/09 01:46 PM
Re: 4 bore ball size - sorry should have posted here initial	DarylS	27/10/09 05:29 AM
Re: 4 bore ball size - sorry should have posted here initial	rigbymauser	27/10/09 09:53 AM
Re: 4 bore ball size - sorry should have posted here initial	Yogi000	09/12/08 06:22 AM
Re: 4 bore ball size - sorry should have posted here initial	billeastern	09/12/08 07:59 AM
Re: 4 bore ball size - sorry should have posted here initial	Yogi000	09/12/08 11:44 AM
Re: 4 bore ball size - sorry should have posted here initial	billeastern	09/12/08 12:43 PM
Re: 4 bore ball size - sorry should have posted here initial	DarylS	09/12/08 04:57 PM
Re: 4 bore ball size - sorry should have posted here initial	billeastern	10/12/08 02:50 AM
Re: 4 bore ball size - sorry should have posted here initial	Yogi000	11/12/08 02:55 AM
Re: 4 bore ball size - sorry should have posted here initial	billeastern	11/12/08 03:00 AM
Re: 4 bore ball size - sorry should have posted here initial	Yogi000	11/12/08 03:32 AM
Re: 4 bore ball size - sorry should have posted here initial	DarylS	12/12/08 03:31 AM
Re: 4 bore ball size - sorry should have posted here initial	Yogi000	12/12/08 06:57 AM
Re: 4 bore ball size - sorry should have posted here initial	Yogi000	12/12/08 07:01 AM
Re: 4 bore ball size - sorry should have posted here initial	bigdog	12/12/08 09:44 AM
Re: 4 bore ball size - sorry should have posted here initial	billeastern	12/12/08 09:56 AM
Re: 4 bore ball size - sorry should have posted here initial	Yogi000	17/12/08 04:19 AM
Re: 4 bore ball size - sorry should have posted here initial	Omnivorous_Bob	17/12/08 06:05 PM
Re: 4 bore ball size - sorry should have posted here initial	Yogi000	18/12/08 02:27 AM
Re: 4 bore ball size - sorry should have posted here initial	Omnivorous_Bob	18/12/08 03:20 AM
Re: 4 bore ball size - sorry should have posted here initial	Yogi000	18/12/08 04:23 AM
Re: 4 bore ball size - sorry should have posted here initial	DarylS	18/12/08 05:11 AM
Re: 4 bore ball size - sorry should have posted here initial	Yogi000	18/12/08 07:40 AM
Re: 4 bore ball size - sorry should have posted here initial	billeastern	19/12/08 01:41 AM
Re: 4 bore ball size - sorry should have posted here initial	Kaimiloa	20/03/09 02:25 PM
Re: 4 bore ball size - sorry should have posted here initial	DarylS	17/12/08 10:11 AM
Re: 4 bore ball size - sorry should have posted here initial	billeastern	17/12/08 02:36 PM
Re: 4 bore ball size - sorry should have posted here initial	bigdog	17/12/08 04:46 PM
Re: 4 bore ball size - sorry should have posted here initial	billeastern	11/12/08 04:31 AM
Re: 4 bore ball size - sorry should have posted here initial	Yogi000	04/12/08 05:53 AM
Re: 4 bore ball size - sorry should have posted here initial	bigdog	04/12/08 11:10 AM
Re: 4 bore ball size - sorry should have posted here initial	Omnivorous_Bob	04/12/08 03:48 PM
Re: 4 bore ball size - sorry should have posted here initial	rigbymauser	06/12/08 10:53 PM
Re: 4 bore ball size - sorry should have posted here initial	billeastern	05/12/08 03:09 AM
Re: 4 bore ball size - sorry should have posted here initial	Yogi000	05/12/08 03:26 AM
Re: 4 bore ball size - sorry should have posted here initial	Omnivorous_Bob	05/12/08 06:35 PM
Re: 4 bore ball size - sorry should have posted here initial	billeastern	06/12/08 02:18 AM
Re: 4 bore ball size - sorry should have posted here initial	Yogi000	06/12/08 04:15 AM
Re: 4 bore ball size - sorry should have posted here initial	billeastern	06/12/08 06:05 AM
Re: 4 bore ball size - sorry should have posted here initial	DarylS	06/12/08 05:59 AM
Re: 4 bore ball size - sorry should have posted here initial	billeastern	06/12/08 06:17 AM
Re: 4 bore ball size - sorry should have posted here initial	Yogi000	06/12/08 06:49 AM
Re: 4 bore ball size - sorry should have posted here initial	billeastern	06/12/08 07:02 AM
Re: 4 bore ball size - sorry should have posted here initial	Yogi000	06/12/08 08:03 AM
Re: 4 bore ball size - sorry should have posted here initial	billeastern	06/12/08 08:08 AM
Re: 4 bore ball size - sorry should have posted here initial	bigdog	06/12/08 09:36 AM
Re: 4 bore ball size - sorry should have posted here initial	billeastern	06/12/08 12:55 PM
Re: 4 bore ball size - sorry should have posted here initial	DarylS	06/12/08 01:03 PM
Re: 4 bore ball size - sorry should have posted here initial	Omnivorous_Bob	06/12/08 06:33 PM
Re: 4 bore ball size - sorry should have posted here initial	bigdog	06/12/08 07:05 PM
Re: 4 bore ball size - sorry should have posted here initial	billeastern	07/12/08 12:23 AM
Re: 4 bore ball size - sorry should have posted here initial	bigdog	07/12/08 09:16 AM
Re: 4 bore ball size - sorry should have posted here initial	billeastern	01/12/08 04:54 AM
Re: 4 bore ball size - sorry should have posted here initial	szihn	01/12/08 07:55 AM
Re: 4 bore ball size - sorry should have posted here initial	billeastern	01/12/08 08:46 AM

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