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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
24/07/08 11:11 PM

I have no idea how you can check a rifle's headspace with a straight-edge.
: Case web separation (3/8" above the rim) is caused by excessive headspace, with only one other possibilty.

: One way to get around an excessive headspace problem is to seat bullets out to contact the chamber's throat, thereby holding the case hard against the breech face when locked up. This usually works or helps in a bad situation.

: .005" is not much variance in headspace. Belted magnums can run up to .012" difference in headspace, from the same box of brass. This is just another reason why some belted magunms only last a few rounds before separating.

: Separations are a sign of excessive headspace or as suggested above (one other cause), continual stretching usually only with very sharply tapered cases which continue to stretch. Sooner or later, the brass separates at the point of it's movement - sometimes this is the web area - it all depends on case wall construction and heat treatment. If there is no excessive stretching of the brass with frequent trimming necessary, then the cause is excessive headspace.

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

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

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Entire topic
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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