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

DarylS
.700 member

Reged: 10/08/05
Posts: 26516
Loc: Beautiful British Columbia, Ca...

Re: 72 cal. Kodiak Double rifle
14/03/10 12:07 PM

Re-crowning never needs to be re-cut, unless you wear the muzzle out with a fiberglass rod.
Take your time, use a tapered dowel or even a tpered grinding stone (the type with a shaft for an electric drill) wrapp some emery around it and twist it in the muzzle with your fingers, back and forth, turning the barrel every now and then - then do the other barrel, then finish with the same emery pusing it in with the end of your thumb - rotating the emery and rotating the gun now and then. I poke a piece of cleaning material into the bore to stop the grindings while re-doing a crown.

The whole idea of the crown is to allow the muzzle to swage the ball and patch down to groove diameter without cutting the patch. If the crown isn't quite even, out a thousanth or so, the escaping gas will be on the same side, escaping exactly the same way each time. This consistancy will provide accuracy that is virtually unchanged from a perfect muzzle, as if done on a lathe, then polished by hand. That is how we do new single barrels that aren't breeched with long tangs.
The picture should show the process - easily done perfectly.

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

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

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Subject	Posted by	Posted on
72 cal. Kodiak Double rifle	TomN	10/03/10 05:37 AM
Re: 72 cal. Kodiak Double rifle	TomN	10/03/10 02:06 PM
Re: 72 cal. Kodiak Double rifle	DarylS	10/03/10 04:50 PM
Re: 72 cal. Kodiak Double rifle	TomN	11/03/10 02:17 AM
Re: 72 cal. Kodiak Double rifle	DarylS	11/03/10 03:16 AM
Re: 72 cal. Kodiak Double rifle	TomN	11/03/10 04:15 AM
Re: 72 cal. Kodiak Double rifle	DarylS	11/03/10 12:35 PM
Re: 72 cal. Kodiak Double rifle	TomN	12/03/10 02:35 AM
Re: 72 cal. Kodiak Double rifle	TomN	13/03/10 04:45 PM
Re: 72 cal. Kodiak Double rifle	DarylS	14/03/10 03:46 AM
Re: 72 cal. Kodiak Double rifle	TomN	14/03/10 11:39 AM
Re: 72 cal. Kodiak Double rifle	DarylS	14/03/10 12:07 PM
Re: 72 cal. Kodiak Double rifle	TomN	25/03/10 11:48 AM
Re: 72 cal. Kodiak Double rifle	DarylS	26/03/10 01:13 AM
Re: 72 cal. Kodiak Double rifle	TomN	26/03/10 03:37 AM
Re: 72 cal. Kodiak Double rifle	DarylS	26/03/10 11:01 AM
Re: 72 cal. Kodiak Double rifle	TomN	27/03/10 02:13 AM
Re: 72 cal. Kodiak Double rifle	DarylS	27/03/10 02:40 AM
Re: 72 cal. Kodiak Double rifle	beleg2	10/03/10 05:55 AM

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