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Hunting
The Basics, Starting Out
Semi auto advice needed
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<blockquote data-quote="Fiftydriver" data-source="post: 2705049" data-attributes="member: 10"><p>this can be caused by a couple things, could be over pressured which causes the bolt to unlock and start extracting the case before chamber pressures drop enough for the case walls to release the chamber walls. This can cause the extractor to slip over the rim and leave it in the chamber. If this is happening you will usually see rim damage. Sometimes using a slower burning powder can help this.</p><p></p><p>it could also be underpressures which means the dwell time is to short and Not enough pressure is being applied to the bolt to make it fully more to the rear. Sometimes a faster burning powder can help this.</p><p></p><p>However, likely the best fix would be to use an adjustable gas block so that you can tune the rifle specifically to the load being used for best function. If its currently over gassed, choke down the gas block valve to slow down the bolt unlock. If its under gassed, open the gas valve more to allow just enough bolt travel so that the bolt will consistently lock open after the last round is fired out of the mag.</p></blockquote><p></p>
[QUOTE="Fiftydriver, post: 2705049, member: 10"] this can be caused by a couple things, could be over pressured which causes the bolt to unlock and start extracting the case before chamber pressures drop enough for the case walls to release the chamber walls. This can cause the extractor to slip over the rim and leave it in the chamber. If this is happening you will usually see rim damage. Sometimes using a slower burning powder can help this. it could also be underpressures which means the dwell time is to short and Not enough pressure is being applied to the bolt to make it fully more to the rear. Sometimes a faster burning powder can help this. However, likely the best fix would be to use an adjustable gas block so that you can tune the rifle specifically to the load being used for best function. If its currently over gassed, choke down the gas block valve to slow down the bolt unlock. If its under gassed, open the gas valve more to allow just enough bolt travel so that the bolt will consistently lock open after the last round is fired out of the mag. [/QUOTE]
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Hunting
The Basics, Starting Out
Semi auto advice needed
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