03-22-2022, 10:31 PM
When 300BLK first came out 1:8 was the standard, and then 1:7 with pistol gas became the norm. I have used both twists without issue and prefer 220gn bullets for subsonic (230 also work but are too expensive and hard to find). Group sizes are fine.
What is your twist rate?
What is your twist rate?

