To my knowledge, subsonic 7.62x39 that will reliably cycle a rifle hasn't really been available. I think this coupled with past reliability issues associated with running 7.62x39 in AR15's is what gave rise to 300 Blackout. Hornady is now offering a 255gr subsonic 7.62x39 load.
https://www.hornady.com/ammunition/r...-x-subsonic#!/
I'm interested to hear if anyone has used this ammunition. If so, how did it perform? Does it actually cycle rifles? If it runs well, I'll actually take the leap of getting a 30Cal suppressor.
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