OK, took it out and ran it over the chrono and 10.2gr of H110 gave low 1200fps, in order to get it to be subsonic and cycle I went as low as 9.1gr of H110 to be at 1000fps.
This is with the 10" barrel and a pistol gas port.
To get it to cycle I had to use a SA bolt carrier and a regular buffer.
Now to continue the load dev with 110gr, 130gr, 147gr, and 175gr to find out what I like and don't like.
Between 10.0 and 9.5gr all chrono'd the same speed, seems weird to me, all within 25fps range!
-B
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