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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Looking for insight on blown primers
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<blockquote data-quote="SSG Graybush" data-source="post: 2864065" data-attributes="member: 115190"><p>That sounds like overpressure, sometimes factory ammo can be a bit hot. Maybe a hot lot. The case sticking slightly by overpressure is probably causing the extractor to damage the case rims. It could break the extractor. Try another ammo, if it doesn't happen with other ammo, there you go. It's not your gas system. It should be adjusted to eject to 2 :30 to 3:00. More forward is over gased and rear is under gased. Make sure your cleaning your chamber well, not just the barrel. And AR's are machines, they need lube. The fed looks good, the imi can't tell. another pic of the case head would be good. Can you see a ejector mark on imi and not the fed? That's a clue that the imi is too hot.</p></blockquote><p></p>
[QUOTE="SSG Graybush, post: 2864065, member: 115190"] That sounds like overpressure, sometimes factory ammo can be a bit hot. Maybe a hot lot. The case sticking slightly by overpressure is probably causing the extractor to damage the case rims. It could break the extractor. Try another ammo, if it doesn't happen with other ammo, there you go. It's not your gas system. It should be adjusted to eject to 2 :30 to 3:00. More forward is over gased and rear is under gased. Make sure your cleaning your chamber well, not just the barrel. And AR's are machines, they need lube. The fed looks good, the imi can't tell. another pic of the case head would be good. Can you see a ejector mark on imi and not the fed? That's a clue that the imi is too hot. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Looking for insight on blown primers
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