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The Range
Rifle & Shotgun Discussion
My AR blew up on me today...
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<blockquote data-quote="Boehlertaught" data-source="post: 2514006" data-attributes="member: 14520"><p>I'm just finishing "Hatchers Notebook" and many of the pictures he notes of blown up rifles look similar to yours. Yes, his pics are of bolt action rifles but the damage looks similar. The pressure a properly manufactured barrel can take is tremendous...test loads on barrels may be over 150% of a normal charge. Bullet setback certainly increases a rounds pressure and it could go as high as a test round. IMO one setback round would not blow up a good quality barrel but a steady does of them would pound the hell out of a barrel and it could fail prematurely. The two issues that most often caused damage noted in Hatchers book were out of battery discharge and barrel obstruction. The out of battery discharge tended to do more damage to the receiver than your damage shows. As mentioned earlier, damage due to a barrel obstruction will show a swelling in the barrel. The split breech end of your barrel is similar to the pictures in Hatchers book of barrels that had a flaw in the metal that made the barrels weak. Just some thoughts.</p></blockquote><p></p>
[QUOTE="Boehlertaught, post: 2514006, member: 14520"] I'm just finishing "Hatchers Notebook" and many of the pictures he notes of blown up rifles look similar to yours. Yes, his pics are of bolt action rifles but the damage looks similar. The pressure a properly manufactured barrel can take is tremendous...test loads on barrels may be over 150% of a normal charge. Bullet setback certainly increases a rounds pressure and it could go as high as a test round. IMO one setback round would not blow up a good quality barrel but a steady does of them would pound the hell out of a barrel and it could fail prematurely. The two issues that most often caused damage noted in Hatchers book were out of battery discharge and barrel obstruction. The out of battery discharge tended to do more damage to the receiver than your damage shows. As mentioned earlier, damage due to a barrel obstruction will show a swelling in the barrel. The split breech end of your barrel is similar to the pictures in Hatchers book of barrels that had a flaw in the metal that made the barrels weak. Just some thoughts. [/QUOTE]
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My AR blew up on me today...
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