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mauserand9mm
.400 member

Reged: 03/09/09
Posts: 1041
Loc: Queensland, Australia

Re: Testing a modified/weakened Mark X Action
10/08/17 01:29 PM

I think the results will be suprising.

Hatcher did some strength testing of Springfield rifles many years ago:

- He turned down the steel over the chamber in stages until it was 1/16" (1.5mm) thick and it withstood the standard 50,000lb (PSI, CUP?) service loads. The 75,000lb proof load blew it out though.

- In other tests the bolt lugs were ground down in stages until they were 0.1" (2.5mm) thick and they functioned fine with the standard service load. The lugs were then ground off completely and the third safety lug kept the bolt in the rifle when a standard service load was fired through it. It was crushed slightly. He then fired a proof load and it sheared the third safety lug off but the bolt only got pushed back 1/2" and got jammed in the rifle.

Post Extras

Entire topic
Subject	Posted by	Posted on
Testing a modified/weakened Mark X Action	UtahShotgunner	09/08/17 12:28 AM
Re: Testing a modified/weakened Mark X Action	4seventy	13/08/17 08:40 AM
Re: Testing a modified/weakened Mark X Action	UtahShotgunner	17/08/17 12:09 AM
Re: Testing a modified/weakened Mark X Action	500Boswell	26/08/17 08:56 AM
Re: Testing a modified/weakened Mark X Action	ismith	18/08/17 12:23 PM
Re: Testing a modified/weakened Mark X Action	Grenadier	19/08/17 02:51 AM
Re: Testing a modified/weakened Mark X Action	UtahShotgunner	26/08/17 01:01 AM
Re: Testing a modified/weakened Mark X Action	DarylS	09/08/17 01:38 AM
Re: Testing a modified/weakened Mark X Action	93x64mm	09/08/17 06:23 AM
Re: Testing a modified/weakened Mark X Action	Huvius	09/08/17 06:58 AM
Re: Testing a modified/weakened Mark X Action	DarylS	09/08/17 11:05 AM
Re: Testing a modified/weakened Mark X Action	UtahShotgunner	09/08/17 01:46 PM
Re: Testing a modified/weakened Mark X Action	Homer	09/08/17 06:03 PM
Re: Testing a modified/weakened Mark X Action	UtahShotgunner	10/08/17 12:44 AM
Re: Testing a modified/weakened Mark X Action	xausa	09/08/17 08:01 AM
Re: Testing a modified/weakened Mark X Action	UtahShotgunner	09/08/17 01:43 PM
Re: Testing a modified/weakened Mark X Action	xausa	09/08/17 09:06 PM
Re: Testing a modified/weakened Mark X Action	Lee440	10/08/17 12:32 AM
Re: Testing a modified/weakened Mark X Action	UtahShotgunner	10/08/17 12:47 AM
Re: Testing a modified/weakened Mark X Action	Vladymere	10/08/17 11:00 AM
Re: Testing a modified/weakened Mark X Action	UtahShotgunner	11/08/17 02:19 AM
Re: Testing a modified/weakened Mark X Action	DarylS	11/08/17 07:25 AM
Re: Testing a modified/weakened Mark X Action	mauserand9mm	10/08/17 01:29 PM
Re: Testing a modified/weakened Mark X Action	UtahShotgunner	11/08/17 02:14 AM
Re: Testing a modified/weakened Mark X Action	mauserand9mm	11/08/17 12:22 PM
Re: Testing a modified/weakened Mark X Action	DarylS	11/08/17 12:32 PM
Re: Testing a modified/weakened Mark X Action	Grenadier	11/08/17 03:20 PM
Re: Testing a modified/weakened Mark X Action	Huvius	09/08/17 08:49 AM
Re: Testing a modified/weakened Mark X Action	UtahShotgunner	09/08/17 06:57 AM

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