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Rifles, Reloading, Optics, Equipment
AR15/10 Rifles
AR-10 Bolt head issue
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<blockquote data-quote="P7M13" data-source="post: 2608226" data-attributes="member: 94154"><p>My first suspicion would be buffer/spring/tube. The stiff BCG is a problem too.</p><p>Questions to investigate:</p><p>Stiff bolt? As in how much force required? Your bolt should move in the carrier with a finger's touch.</p><p>Do you have to pull hard on the charging handle to lock the bolt back? If so, check your buffer/spring dimensions. If not, how about the buffer weight & spring K factor? I am not familiar with JPs captured springs, though their bolts are the best, IMO.</p><p>How is the gas system? When he had the failures, was he using the same ammo as you?</p><p>Do you have adjustable gas? Set it wide open if so.</p><p>Finally, video him shooting. Limp shouldering does happen in ARs.</p></blockquote><p></p>
[QUOTE="P7M13, post: 2608226, member: 94154"] My first suspicion would be buffer/spring/tube. The stiff BCG is a problem too. Questions to investigate: Stiff bolt? As in how much force required? Your bolt should move in the carrier with a finger's touch. Do you have to pull hard on the charging handle to lock the bolt back? If so, check your buffer/spring dimensions. If not, how about the buffer weight & spring K factor? I am not familiar with JPs captured springs, though their bolts are the best, IMO. How is the gas system? When he had the failures, was he using the same ammo as you? Do you have adjustable gas? Set it wide open if so. Finally, video him shooting. Limp shouldering does happen in ARs. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
AR15/10 Rifles
AR-10 Bolt head issue
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