re: Official AR-15 thread

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Is 300 BO an acceptable product

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Yes

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I'd say yes, but only with supersonic loads. Supersonic loads have ballistics that are pretty similar to 7.62x39mm. When using subsonic loads, though, the ballistics more closely resemble .45ACP. LINK

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.45 ACP at 100 yards is a better analogy. I use mine for hogs and other unwanted pest. This will be my first year using it on deer since I now have a pistol lower and can take it out of state easily.

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It certainly doesn't have to be, but it is a pretty impressive cartridge when suppressed.

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Pretty similar to the 30-30 unsuppressed.