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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
How to blowup your rifle
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<blockquote data-quote="Bigaldepr" data-source="post: 1385338" data-attributes="member: 102210"><p>Looks like low temperature embrittlement to me. It broke at the receiver which does not get much heat from each firing and cools down quickly. Pronounced embrittlement occurs at -40F but is still a factor at -15F. Barrels and receivers are cold worked in the first place to make them hard but this also makes the steel brittle. Low temperature embrittlement does not affect the ultimate strength of steel but makes it susceptible shock loading, like igniting 86.8 grains of Retumbo behind a 230 grain bullet. Look it up "Low Temperature Embrittlement."</p></blockquote><p></p>
[QUOTE="Bigaldepr, post: 1385338, member: 102210"] Looks like low temperature embrittlement to me. It broke at the receiver which does not get much heat from each firing and cools down quickly. Pronounced embrittlement occurs at -40F but is still a factor at -15F. Barrels and receivers are cold worked in the first place to make them hard but this also makes the steel brittle. Low temperature embrittlement does not affect the ultimate strength of steel but makes it susceptible shock loading, like igniting 86.8 grains of Retumbo behind a 230 grain bullet. Look it up "Low Temperature Embrittlement." [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
How to blowup your rifle
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