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Double Rifles, Single Shots & Combinations >> Double Rifles

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DarylS
.700 member

Reged: 10/08/05
Posts: 26998
Loc: Beautiful British Columbia, Ca...

Re: Hi, new guy here [Re: pamtnman]
#290433 - 17/11/16 02:43 PM

We had a Sharps 3-1/4" that would not shoot anything but
masking tape wrapped 400gr. PURE lead bullets. Go figure.

I guess what I am saying is straight paper is not the only thing you can patch with.

Mine, however, loved the 580gr. PURE lead conicals, 2-wraps
of .003" bond paper, with it's 18" twist - the longer bullet pictured in the above mould picture.

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

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

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aromakr
.375 member

Reged: 20/04/11
Posts: 849
Loc: Hamilton, Montana

Re: Hi, new guy here [Re: pamtnman]
#290501 - 19/11/16 03:12 AM

Have you tried a Sharps type bullet? Smooth sided with a hollow base. I spent many years shooting original Sharps riles, with bullets designed from original sharps moulds. using pure lead and two wraps of high rag content paper we had excellent results for accuracy, using ffg black with a priming charge of IMR 4759. I don't off hand remember the bullet diameter to bore dia. but using the combination mentioned the bullet upset well, but keep in mind the Sharps barrel's groves were only about .003 deep
Bob

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DarylS
.700 member

Reged: 10/08/05
Posts: 26998
Loc: Beautiful British Columbia, Ca...

Re: Hi, new guy here [Re: aromakr]
#290506 - 19/11/16 05:09 AM

After patching, the bullets were .451" - thus .438" to .439" prior to patching.
Patched, if pushed through the bore (easily pushed), would show marks from the lands.
Upon firing, they would slug up to fill the rifling.

This technique is covered in Paul Mathews book - "The Paper Jacket".

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

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

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pamtnman
.275 member

Reged: 26/10/16
Posts: 77
Loc: PA USA

Re: Hi, new guy here [Re: DarylS]
#298830 - 10/04/17 02:49 PM

months later: tons of experimenting, jiggering moulds, getting custom moulds by Leo Bumphrey, etc the gun shoots half-inch groups at 100 yards, 4 inches high. So it is probably dead on at 150 yards. It was made for shooting red deer in NW Scotland, where long shots were usual, so it appears it is dead on after all that time. Thank you for all the advice, guys.

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pamtnman
.275 member

Reged: 26/10/16
Posts: 77
Loc: PA USA

Re: Hi, new guy here [Re: aromakr]
#313670 - 08/03/18 03:11 PM

Quote:

Have you tried a Sharps type bullet? Smooth sided with a hollow base. I spent many years shooting original Sharps riles, with bullets designed from original sharps moulds. using pure lead and two wraps of high rag content paper we had excellent results for accuracy, using ffg black with a priming charge of IMR 4759. I don't off hand remember the bullet diameter to bore dia. but using the combination mentioned the bullet upset well, but keep in mind the Sharps barrel's groves were only about .003 deep
Bob

Thank you for the suggestion. I did try hollow base bullets, and they keyholed. This gun wants plain base, smooth sided paper patch bullets.

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bouldersmith
.375 member

Reged: 23/03/06
Posts: 627
Loc: Boulder Colorado

Re: Hi, new guy here [Re: pamtnman]
#313763 - 10/03/18 04:06 AM

Pamtnman: Well tell us what you did to get it to shoot such tight groups. Inquiring minds want to know.

OahuKaneohe: Looks like that Rigby found the right home. Glad to see you putting it to use.

--------------------
New website http://www.bertramandco.com

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pamtnman
.275 member

Reged: 26/10/16
Posts: 77
Loc: PA USA

Re: Hi, new guy here [Re: bouldersmith]
#314596 - 28/03/18 03:00 PM

Hey Boulder! Did you order the DGJ winter 2017 edition? Also, this next edition, due out any day, has the final recipe in it, although a big chunk of text was misplaced during the editing and it will go in the next DGJ. Basically use a .450" smooth paper patched bullet patched up to .460", the 40% Ross Seyfried formula with 4198.

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