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Double Rifles, Single Shots & Combinations >> Building Double Rifles & Gunsmithing

DarylS
.700 member

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

Re: My 45-100 project
10/07/08 09:53 PM

Yes, Marrakai - I agree that the headspace should be checked.

Is this straight case 2.4". 2.6" or 2 7/8"? All were loaded with 100gr. of powder with certain bullet weights. The 2.4"Sharps also called the .45/90 by Winchester was loaded with up to 100gr.BP and a 550gr. bullet by Sharps.

I would hold loads with the 350gr. to 2,250fps in a 2.4" case, but a longer case should get a bit more with no stretching. Stretching is usually caused by headspace problems, not due to maximum loads. 2,250fps can be achieve in a .45 2.1" in a lever gun at 43,000psi. The longer cases will deliver the same velocity at slightly lower pressure & this depends on the case length. A 3 1/4" .45 case will deliver 300gr. bullets at something like 2,400fps to 2,600fps at 34,000PSI using H4895 (or maybe IMR4895) This was Lyman data, can't remember off-hand.

The Speer 350 gr. should make a terrific North American big game round at 2,250fps - for all heavy game. I'd not try for higher speeds in that double.

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

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

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Subject	Posted by	Posted on
My 45-100 project	xsheadspace	09/07/08 11:28 PM
Re: My 45-100 project	SharpsNitro	12/08/08 02:30 PM
Re: My 45-100 project	DarylS	13/08/08 01:15 AM
Re: My 45-100 project	SharpsNitro	13/08/08 10:50 AM
Re: My 45-100 project	DarylS	14/08/08 12:22 AM
Re: My 45-100 project	xsheadspace	19/08/08 04:35 AM
Re: My 45-100 project	Sarg	19/08/08 06:03 AM
Re: My 45-100 project	DarylS	20/08/08 04:32 AM
Re: My 45-100 project	xausa	13/08/08 01:14 AM
Re: My 45-100 project	Birdhunter50	03/08/08 10:51 AM
Re: My 45-100 project	Birdhunter50	10/07/08 11:20 PM
Re: My 45-100 project	xsheadspace	11/07/08 07:31 AM
Re: My 45-100 project	Birdhunter50	24/07/08 09:31 PM
Re: My 45-100 project	DarylS	24/07/08 11:11 PM
Re: My 45-100 project	xsheadspace	25/07/08 08:41 AM
Re: My 45-100 project	xausa	29/07/08 02:21 AM
Re: My 45-100 project	xsheadspace	03/08/08 01:52 AM
Re: My 45-100 project	DarylS	03/08/08 02:32 AM
Re: My 45-100 project	450_366	27/07/08 02:09 AM
Re: My 45-100 project	xsheadspace	28/07/08 11:38 PM
Re: My 45-100 project	DarylS	29/07/08 01:41 AM
Re: My 45-100 project	tinker	25/07/08 10:32 AM
Re: My 45-100 project	Birdhunter50	10/07/08 08:53 AM
Re: My 45-100 project	Birdhunter50	10/07/08 08:57 AM
Re: My 45-100 project	Marrakai	10/07/08 01:13 PM
Re: My 45-100 project	dale	10/07/08 02:59 PM
Re: My 45-100 project	DarylS	10/07/08 09:53 PM
Re: My 45-100 project	tinker	10/07/08 04:30 AM

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