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<blockquote data-quote="Jcalder" data-source="post: 5297713" data-attributes="member: 12150"><p>Having some issues with an AR. 6.5 Grendel, 20" barrel. PSA upper. 60 rounds thru it. Of the first 20, I had to dig I think 6 out that basically stovepiped. Out of the next 40, which were all shot this afternoon, I had another 2-3 that stovepiped. One thing I have noticed is that the brass is ejecting hard and hitting where the forward assist is. I'm not familiar enough with the operating system to know where to start. Upper is new. [ATTACH=full]128695[/ATTACH]</p><p></p><p></p><p>Another issue, which could possibly be me, I'm getting a lot of variation on my impacts. Aiming at bullseye, and sometimes it'll go close and others it won't. I'm new to the platform so I may be sighting a bit different each time. [ATTACH=full]128689[/ATTACH]First group of the day. No scope adjustment.</p><p></p><p>[ATTACH=full]128690[/ATTACH]Next group, made an adjustment. </p><p></p><p></p><p>[ATTACH=full]128691[/ATTACH]</p><p>Shot the upper right hole, made another adjustment and sent 4. Best group of day. </p><p></p><p>[ATTACH=full]128692[/ATTACH]No adjustment, just another 5 shot group, but my impacts moved. </p><p></p><p>[ATTACH=full]128693[/ATTACH]Shot 10, 9 stayed low, one went into a previous group. </p><p></p><p></p><p>[ATTACH=full]128694[/ATTACH]Another 10 round group. No adjustments were made. But you can see how the groups impacted differently.</p></blockquote><p></p>
[QUOTE="Jcalder, post: 5297713, member: 12150"] Having some issues with an AR. 6.5 Grendel, 20” barrel. PSA upper. 60 rounds thru it. Of the first 20, I had to dig I think 6 out that basically stovepiped. Out of the next 40, which were all shot this afternoon, I had another 2-3 that stovepiped. One thing I have noticed is that the brass is ejecting hard and hitting where the forward assist is. I’m not familiar enough with the operating system to know where to start. Upper is new. [ATTACH type="full"]128695[/ATTACH] Another issue, which could possibly be me, I’m getting a lot of variation on my impacts. Aiming at bullseye, and sometimes it’ll go close and others it won’t. I’m new to the platform so I may be sighting a bit different each time. [ATTACH type="full"]128689[/ATTACH]First group of the day. No scope adjustment. [ATTACH type="full"]128690[/ATTACH]Next group, made an adjustment. [ATTACH type="full"]128691[/ATTACH] Shot the upper right hole, made another adjustment and sent 4. Best group of day. [ATTACH type="full"]128692[/ATTACH]No adjustment, just another 5 shot group, but my impacts moved. [ATTACH type="full"]128693[/ATTACH]Shot 10, 9 stayed low, one went into a previous group. [ATTACH type="full"]128694[/ATTACH]Another 10 round group. No adjustments were made. But you can see how the groups impacted differently. [/QUOTE]
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