My load. Standard buffer and spring. Gas block wide open.
220 gr Sierra Pro-Hunter round nose. 11.5 gr 1680. WW standard small rifle primers. 2.260 OAL.
Chrono shows average 1123 @ 3 feet from the muzzle. Our other East Texas member installed his suppressor to test. No crack, no problems cycling.
Thanks for the input. Settled on Hornaday 190 gr. sub sonic partition bullets. 9.6 gr. H110.
So far no problems cycling or feeding.
I have loaded up some 200 gr. with 9.2 gr. H110. Going to try those next.
You can cycle almost every
properly gassed gun at subsonic velocities with 1680 or CFE BLK. It is easier with 220s but you can do it down to 150gr reliably with those two. Suppressed helps but not necessary.