For those of you who are interested in subsonic loads, I thought I would share.
I’m using the Lee C358-200-RF mold. Boolets are sized to 0.356” without a gas check. 1.2 grains of Vihtavuori N310 cycles my blowback carbine and is quiet.
Beware! Seating depth causes pressure to spike rapidly!
I’m weighing each charge.