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Shooting & Reloading - Mausers, Big Bores and others >> Muzzleloaders & Blackpowder

DarylS
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Reged: 10/08/05
Posts: 26992
Loc: Beautiful British Columbia, Ca...

Re: Pedersoli Kodiak. 58 double shooting left - technique advice
27/06/21 01:46 AM

The bottom of the grooves also have to be rounded,not just the tops of the lands.
The first picture you posted shows a too-sharp an edge at the bottom of the grooves.
A coned muzzle has from 1" to 2" of coning, a gradual tightening over that distance to the tops of the lands.
This sort of muzzle treatment loads harder with the rounded lands and grooves smoothing that I do - with a lathe and just a finger on the emery or paper, or with the barrel on the gun, rotating my hand and turning the gun 180degrees every 20 seconds or so.
From a machine-cut muzzle crown to a gently smoothed and radiused crown that I use, is usually only a 10 minute job.
The result is a crown that loads easily as the 'shape' of it moves metal & is the shape used for drawing metal.
Before:

After:

The "crown" of this muzzle is less than 1/8" deep, yet allows loading balls .005" under bore size with a .022" patch - easily, using a short starter.
My .69 has a similar crown (almost exactly) & I routinely use a .682" ball in the .690" bore, with a 12 ounce denim patch which I measure at .030" compressed hard. I have also shot it with same ball and a 14 ounce denim that I measure at .034" thick.
This rounded "shape" is the same as used in metal drawing dies.
Look at the filed muzzles of Jaeger rifles - both lands and grooves are filed out enlarging their size, although the muzzles appear to be "square". Closer examination shows they are filed out - they are not coned.

If you are happy with .010" patches - carry on. I'm done here.

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

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

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Subject	Posted by	Posted on
Pedersoli Kodiak. 58 double shooting left - technique advice	ironoxide	21/06/21 08:21 AM
Re: Pedersoli Kodiak. 58 double shooting left - technique advice	NitroX	21/06/21 04:55 PM
Re: Pedersoli Kodiak. 58 double shooting left - technique advice	ironoxide	21/06/21 08:52 PM
Re: Pedersoli Kodiak. 58 double shooting left - technique advice	93x64mm	22/06/21 07:44 AM
Re: Pedersoli Kodiak. 58 double shooting left - technique advice	EDELWEISS	22/06/21 09:03 AM
Re: Pedersoli Kodiak. 58 double shooting left - technique advice	85lc	22/06/21 01:05 PM
Re: Pedersoli Kodiak. 58 double shooting left - technique advice	ironoxide	22/06/21 05:35 PM
Re: Pedersoli Kodiak. 58 double shooting left - technique advice	ironoxide	23/06/21 10:38 AM
Re: Pedersoli Kodiak. 58 double shooting left - technique advice	85lc	23/06/21 12:12 PM
Re: Pedersoli Kodiak. 58 double shooting left - technique advice	ironoxide	23/06/21 08:35 PM
Re: Pedersoli Kodiak. 58 double shooting left - technique advice	ironoxide	23/06/21 10:42 PM
Re: Pedersoli Kodiak. 58 double shooting left - technique advice	85lc	24/06/21 12:37 AM
Re: Pedersoli Kodiak. 58 double shooting left - technique advice	ironoxide	25/06/21 02:32 AM
Re: Pedersoli Kodiak. 58 double shooting left - technique advice	93x64mm	25/06/21 07:40 AM
Re: Pedersoli Kodiak. 58 double shooting left - technique advice	DarylS	25/06/21 12:36 PM
Re: Pedersoli Kodiak. 58 double shooting left - technique advice	ironoxide	25/06/21 08:54 PM
Re: Pedersoli Kodiak. 58 double shooting left - technique advice	DarylS	26/06/21 01:28 AM
Re: Pedersoli Kodiak. 58 double shooting left - technique advice	ironoxide	26/06/21 04:15 AM
Re: Pedersoli Kodiak. 58 double shooting left - technique advice	DarylS	26/06/21 08:40 AM
Re: Pedersoli Kodiak. 58 double shooting left - technique advice	ironoxide	26/06/21 11:13 PM
Re: Pedersoli Kodiak. 58 double shooting left - technique advice	DarylS	27/06/21 01:46 AM
Re: Pedersoli Kodiak. 58 double shooting left - technique advice	ironoxide	27/06/21 09:33 AM
Re: Pedersoli Kodiak. 58 double shooting left - technique advice	93x64mm	27/06/21 09:56 PM
Re: Pedersoli Kodiak. 58 double shooting left - technique advice	ironoxide	01/07/21 05:49 PM
Re: Pedersoli Kodiak. 58 double shooting left - technique advice	ironoxide	19/07/21 02:57 AM
Re: Pedersoli Kodiak. 58 double shooting left - technique advice	DarylS	19/07/21 05:26 AM
Re: Pedersoli Kodiak. 58 double shooting left - technique advice	ironoxide	19/07/21 09:52 AM
Re: Pedersoli Kodiak. 58 double shooting left - technique advice	DarylS	20/07/21 01:09 AM
Re: Pedersoli Kodiak. 58 double shooting left - technique advice	ironoxide	20/07/21 10:14 AM

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