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UtahShotgunner
.275 member


Reged: 07/01/08
Posts: 53
Loc: PA
Re: Testing a modified/weakened Mark X Action
      11/08/17 02:14 AM

Quote:

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.




Hatcher and Ackley did some very interesting testing 'back in the day'.

I don't claim to have a tenth of their knowledge or expect to discover anything new. Just hoping to bring some information into the digital age. For shooters who (sadly) have never heard of folks like Hatcher or Ackley.

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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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