NRA Safety Notice re No 4 7.62mm Conversions

[ireload2]

>>>Is there any scientific proof that the steel in these areas is “compressed” or displaced?<<<

The bolt is compressed momentarily and the receiver is stretched momentarily. The members of a rear locking action under load are longer and deform momentarily more than the shorter members of a front locking action.
This will be the case until the laws of physics are repeals.

Tis a fact of life. Engineering books are full of the information.
Steel is indeed elastic. Ask Mark Knopfler. He is extremely familiar with the elastic properties of steel and has made millions with his abilities. He even lives in the UK.

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[Surpmil]

>>>Is there any scientific proof that the steel in these areas is “compressed” or displaced?<<<

The bolt is compressed momentarily and the receiver is stretched momentarily. The members of a rear locking action under load are longer and deform momentarily more than the shorter members of a front locking action.
This will be the case until the laws of physics are repeals.

Tis a fact of life. Engineering books are full of the information.
Steel is indeed elastic. Ask Mark Knopfler. He is extremely familiar with the elastic properties of steel and has made millions with his abilities. He even lives in the UK.

Yes, the stretching and flexing part I knew about. I had the (mistaken?) impression it was being asserted that this was a permanent change.

Mr. White (was it?) thinks the body of his No1 MkV has "stretched" according to his reply to Alan d'Enfield's letter. I wonder how he 'knows' it has done so, rather than just worn at the bearing surfaces?