I have come to the conclusion that it mght have been a mistake to release the 300blk first in subsonic. There seems to be a group of people who can not get beyond the "subsonic". I have Glock 21s that shoot a 230 grain hardball, but I don't equate that round to a 300 blk.
I am trying to fit a Palmetto upper into my budget this month and am looking for a place in SoCal to buy the ammo and none of it will be 220 grain subsonic, I want something that goes at least twice that fast!