Hi Guys- Newbie here

[Pnutz]

Originally Posted by msorwan

Well after having a Douglas blank with an 8" twist in the rafters for at least 3 years, finally made a 300/221 barrel for an AR.
Plans are to keep loads subsonic. The bbl is 16.1" long and I moved the port back 2" from the normal carbine location, port size is .106.
She functioned fine yesterday with 9.3 gr/4227 and 190 SMK's which are the heaviest bullets I have right now. Hope to pick up some 220's and AA1680 plus either AA9 or H110 as well. Brass is Rem 221 which am forming with Redding dies.

Any how I'll be lurking around here quite a bit as I get this new toy figured out!

Regards,
Mike Orwan

Does moving the Gas port back increase the amount of gas to better cycle SUB rounds in the AR?

[msorwan]

Moving the port back definitely helps function with subsonic loads.
Basicaly the oposite of what you want when going to a longer barrel. On 26" and longer I move the gas port forward 2" from the normal rifle location.
You can really feel a difference with the long barrels.