All my loads that work sub are using 1680 never could make lilgun or h110 cycle well (i am running same set up as you I have a carbine length gas on a 16 inch barrel)
Always crono and check for tumbling before you try it through your can
If you get some A1680 I posted the loads that worked on 300blackout.com
Always crono and check for tumbling before you try it through your can
If you get some A1680 I posted the loads that worked on 300blackout.com
