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<blockquote data-quote="skipperbrown" data-source="post: 5301189" data-attributes="member: 22371"><p>My 300 BO was ejecting the brass and it was striking the back of the ejection port and denting the case mouth. I was told by the old timers at the range to cut off one ring off of the ejection spring and keep doing so until the brass landed at 2:00-3:00 from the barrel. It only took one ring. There is a jig you can buy to assist with the removal of the pin/spring.</p><p></p><p>Stove piping is probably due to the bolt not fully opening. If the bolt won't lock back when a single round is fired, you aren't getting enough gas and/or your buffer spring may be too strong. If the bolt locks back with a single round and you still get stove pipes with additional rounds, then your extractor or ejection spring isn't functioning right.</p><p></p><p>ARs are generally run very 'wet'. Lots of lube.</p></blockquote><p></p>
[QUOTE="skipperbrown, post: 5301189, member: 22371"] My 300 BO was ejecting the brass and it was striking the back of the ejection port and denting the case mouth. I was told by the old timers at the range to cut off one ring off of the ejection spring and keep doing so until the brass landed at 2:00-3:00 from the barrel. It only took one ring. There is a jig you can buy to assist with the removal of the pin/spring. Stove piping is probably due to the bolt not fully opening. If the bolt won't lock back when a single round is fired, you aren't getting enough gas and/or your buffer spring may be too strong. If the bolt locks back with a single round and you still get stove pipes with additional rounds, then your extractor or ejection spring isn't functioning right. ARs are generally run very 'wet'. Lots of lube. [/QUOTE]
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