Doesn't 1:9 seem a bit slow for a 300 blackout ? I mean 1:7 is "ideal" for subsonic rounds right ? I'm just curious as to why Bushmaster would make a 300 with a 1:9. Maybe someone who bought oNE could explain to me what they bought it for and what was the attraction to a 1:9 blackout. I'm not knocking the rifle.... I'm no expert. I almost bought this gun until I started researching twist rate for subs. I'd like someone to maybe talk me into getting one. Thank you.

Question

Doesn't 1:9 seem a bit slow for a 300 blackout ? I mean 1:7 is "ideal" for subsonic rounds right ?  I'm just curious as to why Bushmaster would make a 300 with a 1:9. Maybe someone who bought oNE could explain to me what they bought it for and what was the attraction to a 1:9 blackout. I'm not knocking the rifle.... I'm no expert. I almost bought this gun until I started researching twist rate for subs.  I'd like someone to maybe talk me into getting one. Thank you.

Mary C. · Answer

It is a happy medium of sub sonic and supersonic

Mark G. · Answer

The 1:7 will stabilize the heaviest bullets better if that's what you intend to use.

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