Quote Originally Posted by Constructiongunner View Post
So I'm looking into building a dedicated suppressed upper in 300 blackout. Pistol length. I've narrowed down the world of suppressors to just a few that I'm looking at. Is there a "cheapish" 300 blackout plinker load that works with suppresors? I know heavier bullets but can I use a 150gr fmj in 308?
Absolutely!! That’s what I use for my suppressed plinking loads. Nothing will get you cheaper FMJ’s than mil-surp 150-147’s FMJBT. Get yourself a 1-7 twist, pistol length gas system and GTG!! One thing with these though is you need to load them DEEP!! Start around 11.5-11gr 1680 and/or CFEBLK. (This is from a 10.5” 1-7 barrel). I’m currently running Hornady 150gr FMJBT with 10.6gr 1680 @ 2.04” and 11.8gr CFEBLK @ 2.04”. Both kids are subsonic, cycle reliably with no issues, and bolt hold open last round(assuming you’re wanting an AR).