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Registered
Join Date: Dec 1969
Location: chula vista ca usa
Posts: 5,725
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The reason I asked about 5.56 and .223 is the chambering of the 5.56 NATO rifle is slightly longer than .223 Remington and if it is a 5.56 NATO rifle you can shoot both. If it is a .223 Remington chambered rifle then the 5.56 NATO rounds can cause issues or jam, ETC. We used to see lots of that at our range several years ago when the AR-15 was at it peak here in CA and it has died away since the state made them illegal. The ammo you use could cause the way the gun shoots and the horizontal spread could be that?
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