300 Blackout loads with different powders?

[6bg6ga]

Been using H110 powder with my blackout and its accurate and also dirty. I shoot 147gr jacketed boat tails. Its also a pistol length gas system. So, does anyone have a different powder that will let it cycle correctly? Will Unique work? Or Red Dot? 4895?

[RU shooter]

Mine was set up little different than yours I had a 20" barrel and carbine gas but Varget and 4895 worked in mine same with lil gun 4198 and RE7 all with bullets 150 and up wasn't try for subsonic or top vel either .

[jcren]

My brother in law uses accurate 9 and 1680 for everything from 110 grain plinkers to 230 grain cast.

[bruce drake]

Buy yourself a pigtail gas-tube and extend your gas-cycle out to the Carbine length and you will have a greater choice of powders to choose from.

I own a 20" barrelled 300BLK upper that I recut the chamber to 30-223 and extended my own gas tube from pistol length to carbine length and the options to use other powders became very much evident. I can use IMR and H4895, H335 and WC844 with my 30-223 rifle now that I couldn't get enough pressure out of the smaller 300BLK case to have it to function.

[wiljen]

Vihta N110 Great powder for the blackout and the 357 Maximum.

[osteodoc08]

1680, #9, 4227, LilGun to name a few.

[Moonie]

I like RL-7 with subs, should work ok with supers as well.

[alping45]

I am only using a bolt gun, but Lil gun has been my go to powder for supersonic loads. I am getting 2,300fps with a Hornady 125gr SST, and 2,000fps with the Lee 155-312 out of my 16" Rem 700 AAC. As loud as they are I would imagine either of these would be plenty hot enough to cycle an auto. I get sub MOA groups with the 125gr SST, the cast I haven't had a chance to put on paper yet.

[destrux]

The fast powders like Unique and Red Dot and such won't cycle a gas gun.

Stuff in the RE7, 4227, H110, 296, LilGun, 5744, 1680 range of burn rates will cycle an AR-15.