Subsonic load & gas tube question
I need several loaded using 200 & 220 grain bthp to try out in two different 300 whisper/fireball AR's. I have one from model 1 sales and one from J&T distributing.
What powder should I use and how much?
They will be shot with a suppressor and without.
Where is a good place to get adjustable gas tubes or what is recommended if the gun won't function properly with subsonic ammo?
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