Thread: Mini 14 based 300 Blackout

I wouldn't be surprised if a mini14/30 in 300 Blackout has difficulties cycling sub-sonics it's not just the gas block but the whole system that needs to be tuned. Therefore go for 7.62x39 as ammo is cheaper than 300 Blackout and a bit more powerful in a longer barrel.

300 Whisper/Blackout are supost to be interchangeable.