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Double Rifles, Single Shots & Combinations >> Single Shots & Combination Guns

xausa
.400 member

Reged: 07/03/07
Posts: 2037
Loc: Tennessee, USA

Re: 45-70 black powder barrel
23/02/13 09:48 AM

In his book "Hatcher's Notebook" pages 101-2, General Hatcher described a test he made with regard to chamber wall thickness. He had the barrel of a Springfield rifle turned down until the chamber wall thickness was 1/8" (.125") and fired it with regular and high pressure (75,000 lbs/sq./in) cartridges. This produced no visible results, so he proceded to have the barrel turned down to the point that the chamber walls were only 1/16" thick (.0625"). The barrel was unaffected by regular service cartridges, but a 75,000 lbs/sq./in. cartridge blew a piece out of the side of the chamber. He remarked that since the thickness of the regular barrel over the chamber is 5/16" "it is plainly evident that the strength should be sufficient."

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Subject	Posted by	Posted on
45-70 black powder barrel	Longknife	23/02/13 03:36 AM
Re: 45-70 black powder barrel	DarylS	23/02/13 09:02 AM
Re: 45-70 black powder barrel	xausa	23/02/13 09:48 AM

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