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Rifles, Reloading, Optics, Equipment
AR15/10 Rifles
AR10 malfuction help
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<blockquote data-quote="Greyfox" data-source="post: 688635" data-attributes="member: 10291"><p>You can try hand feeding one of your loaded rounds into the chamber. Push it in with your finger to see if it easily chambers fully and easily. It should drop out with a tap on the butt. This is with a clean chamber. if the cartridge is jammed in too tight you can have cycling issues. At least this is what I have seen. Similiar effect as you see with a bolt rifle showing difficult bolt lift when using improperly sized brass. With an AR this effect will cause a cycling problem.</p><p>Gas impingement AR's operate on a particular pressure ramp, usually set up for military type bullet weights and powders. This was a large part of the issue with the early M16's during the Viet Nam war. The early cartridges(powder) were mismatched to the original loads designed for the gas system. Timing is important with an AR. I haven't tried 125's in my rifle, but if the pressure ramp is radically different from the standard buffer/spring set-up it will throw the timing off, which may cause cycling issues. I would be interested to hear as well if others have tried 125's. </p><p></p><p></p><p></p><p>problems.</p></blockquote><p></p>
[QUOTE="Greyfox, post: 688635, member: 10291"] You can try hand feeding one of your loaded rounds into the chamber. Push it in with your finger to see if it easily chambers fully and easily. It should drop out with a tap on the butt. This is with a clean chamber. if the cartridge is jammed in too tight you can have cycling issues. At least this is what I have seen. Similiar effect as you see with a bolt rifle showing difficult bolt lift when using improperly sized brass. With an AR this effect will cause a cycling problem. Gas impingement AR's operate on a particular pressure ramp, usually set up for military type bullet weights and powders. This was a large part of the issue with the early M16's during the Viet Nam war. The early cartridges(powder) were mismatched to the original loads designed for the gas system. Timing is important with an AR. I haven't tried 125's in my rifle, but if the pressure ramp is radically different from the standard buffer/spring set-up it will throw the timing off, which may cause cycling issues. I would be interested to hear as well if others have tried 125's. problems. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
AR15/10 Rifles
AR10 malfuction help
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